diff --git a/legendary/cli.py b/legendary/cli.py
index 9d8430d..998b017 100644
--- a/legendary/cli.py
+++ b/legendary/cli.py
@@ -283,7 +283,7 @@ class LegendaryCLI:
         versions = dict()
         for game in games:
             try:
-                versions[game.app_name] = self.core.get_asset(game.app_name, platform=game.platform).build_version
+                versions[game.app_name] = self.core.get_asset(game.app_name, platform=game.platform, namespace=game.namespace).build_version
             except ValueError:
                 logger.warning(f'Metadata for "{game.app_name}" is missing, the game may have been removed from '
                                f'your account or not be in legendary\'s database yet, try rerunning the command '
@@ -822,6 +822,8 @@ class LegendaryCLI:
         args.app_name = self._resolve_aliases(args.app_name)
         if self.core.is_installed(args.app_name):
             igame = self.core.get_installed_game(args.app_name)
+            if not args.namespace:
+                args.namespace = igame.namespace
             args.platform = igame.platform
             if igame.needs_verification and not args.repair_mode:
                 logger.info('Game needs to be verified before updating, switching to repair mode...')
@@ -875,6 +877,23 @@ class LegendaryCLI:
             else:
                 logger.warning(f'No asset found for platform "{args.platform}", '
                                f'trying anyway since --no-install is set.')
+        elif not args.namespace and len(game.asset_infos[args.platform]) > 1:
+            asset_infos = []
+            for asset in game.asset_infos[args.platform]:
+                namespace_info = game.namespaces.get(asset.namespace)
+                if namespace_info:
+                    asset_infos.append((namespace_info.get('sandboxType'), namespace_info.get('sandboxName'), asset.namespace))
+            type_name_str = '\n'.join([f'{_t}\t{_n}\t{_ns}' for _t,_n,_ns in asset_infos])
+            logger.error('You have access to more than one asset for this game\n'
+                         f'Type\tName\tNamespace\n'
+                         +type_name_str
+                         +'\nuse --namespace to pick one')
+            exit(1)
+        
+        if args.namespace and args.namespace not in game.namespaces:
+            available_namespaces = '\n'.join(list(game.namespaces.keys()))
+            logger.error("Unknown namespace\n" + available_namespaces)
+            exit(1)
 
         if game.is_dlc:
             logger.info('Install candidate is DLC')
@@ -979,6 +998,7 @@ class LegendaryCLI:
                                                           override_delta_manifest=args.override_delta_manifest,
                                                           preferred_cdn=args.preferred_cdn,
                                                           disable_https=args.disable_https,
+                                                          namespace=args.namespace,
                                                           bind_ip=args.bind_ip)
 
         # game is either up-to-date or hasn't changed, so we have nothing to do
@@ -1644,6 +1664,7 @@ class LegendaryCLI:
 
         manifest_data = None
         entitlements = None
+        namespace = args.namespace or game.namespace
         # load installed manifest or URI
         if args.offline or manifest_uri:
             if app_name and self.core.is_installed(app_name):
@@ -1659,20 +1680,21 @@ class LegendaryCLI:
                 logger.info('Game not installed and offline mode enabled, cannot load manifest.')
         elif game:
             entitlements = self.core.egs.get_user_entitlements_full()
-            egl_meta = self.core.egs.get_game_info(game.namespace, game.catalog_item_id)
+            egl_meta = self.core.egs.get_game_info(namespace, game.catalog_item_id)
             game.metadata = egl_meta
             # Get manifest if asset exists for current platform
             if args.platform in game.asset_infos:
-                manifest_data, _ = self.core.get_cdn_manifest(game, args.platform)
+                manifest_data, _ = self.core.get_cdn_manifest(game, args.platform, namespace)
 
         if game:
             game_infos = info_items['game']
             game_infos.append(InfoItem('App name', 'app_name', game.app_name, game.app_name))
             game_infos.append(InfoItem('Title', 'title', game.app_title, game.app_title))
-            game_infos.append(InfoItem('Latest version', 'version', game.app_version(args.platform),
-                                       game.app_version(args.platform)))
-            all_versions = {k: v.build_version for k, v in game.asset_infos.items()}
-            game_infos.append(InfoItem('All versions', 'platform_versions', all_versions, all_versions))
+            _v = game.app_version(args.platform, namespace)
+            game_infos.append(InfoItem('Latest version', 'version', _v, _v))
+            all_versions = {k: '; '.join([a.build_version for a in v]) for k, v in game.asset_infos.items()}
+            all_versions_json = {k: [a.__dict__ for a in v] for k,v in game.asset_infos.items()}
+            game_infos.append(InfoItem('All versions', 'platform_versions', all_versions, all_versions_json))
             # Cloud save support for Mac and Windows
             game_infos.append(InfoItem('Cloud saves supported', 'cloud_saves_supported',
                                        game.supports_cloud_saves or game.supports_mac_cloud_saves,
@@ -1747,6 +1769,13 @@ class LegendaryCLI:
             else:
                 game_infos.append(InfoItem('Owned DLC', 'owned_dlc', None, []))
 
+            if len(game.namespaces.keys()) > 0:
+                all_namespaces = {_n['sandboxName']: '({}) - {}'.format(_n['sandboxType'], _n['namespace']) for _n in game.namespaces.values()}
+                game_infos.append(InfoItem('Namespaces', 'namespaces', all_namespaces, list(game.namespaces.values())))
+            else:
+                game_infos.append(InfoItem('Namespaces', 'namespaces', None, []))
+
+
             igame = self.core.get_installed_game(app_name)
             if igame:
                 installation_info = info_items['install']
@@ -2799,6 +2828,7 @@ def main():
                                 help='Do not ask about installing DLCs.')
     install_parser.add_argument('--bind', dest='bind_ip', action='store', metavar='<IPs>', type=str,
                                 help='Comma-separated list of IPs to bind to for downloading')
+    install_parser.add_argument('--namespace', dest='namespace', help='Specify namespace to pick sandbox from which to install')
 
     uninstall_parser.add_argument('--keep-files', dest='keep_files', action='store_true',
                                   help='Keep files but remove game from Legendary database')
@@ -2962,6 +2992,7 @@ def main():
                              help='Output information in JSON format')
     info_parser.add_argument('--platform', dest='platform', action='store', metavar='<Platform>', type=str,
                              help='Platform to fetch info for (default: installed or Mac on macOS, Windows otherwise)')
+    info_parser.add_argument('--namespace', dest='namespace', type=str, help='Specify namespace to return primary data of')
 
     store_group = activate_parser.add_mutually_exclusive_group(required=True)
     store_group.add_argument('-U', '--uplay', dest='uplay', action='store_true',
diff --git a/legendary/core.py b/legendary/core.py
index 04344e3..38070a7 100644
--- a/legendary/core.py
+++ b/legendary/core.py
@@ -365,13 +365,20 @@ class LegendaryCore:
                 self.lgd.assets = assets
 
         return self.lgd.assets[platform]
+    
+    def get_library_items(self, include_metadata=True, force_refresh=False):
+        if force_refresh or not self.lgd.library_items:
+            lib = self.egs.get_library_items(include_metadata)
+            if self.lgd.library_items != lib:
+                self.lgd.library_items = lib
+        return self.lgd.library_items
 
-    def get_asset(self, app_name, platform='Windows', update=False) -> GameAsset:
+    def get_asset(self, app_name, platform='Windows', update=False, namespace=None) -> GameAsset:
         if update or platform not in self.lgd.assets:
             self.get_assets(update_assets=True, platform=platform)
 
         try:
-            return next(i for i in self.lgd.assets[platform] if i.app_name == app_name)
+            return next(i for i in self.lgd.assets[platform] if i.app_name == app_name and (namespace is None or i.namespace == namespace))
         except StopIteration:
             raise ValueError
 
@@ -412,6 +419,8 @@ class LegendaryCore:
         for _platform in platforms:
             self.get_assets(update_assets=update_assets, platform=_platform)
 
+        library_items = self.get_library_items(force_refresh=update_assets)
+
         if not self.lgd.assets:
             return _ret, _dlc
 
@@ -419,31 +428,35 @@ class LegendaryCore:
         for _platform, _assets in self.lgd.assets.items():
             for _asset in _assets:
                 if _asset.app_name in assets:
-                    assets[_asset.app_name][_platform] = _asset
+                    assets[_asset.app_name][_platform].append(_asset)
                 else:
-                    assets[_asset.app_name] = {_platform: _asset}
+                    assets[_asset.app_name] = {_platform: [_asset]}
 
         fetch_list = []
         games = {}
+        sidecars = {}
 
         for app_name, app_assets in sorted(assets.items()):
-            if skip_ue and any(v.namespace == 'ue' for v in app_assets.values()):
+            if skip_ue and any(v.namespace == 'ue' for _assets in app_assets.values() for v in _assets):
                 continue
 
             game = self.lgd.get_game_meta(app_name)
             asset_updated = sidecar_updated = False
             if game:
-                asset_updated = any(game.app_version(_p) != app_assets[_p].build_version for _p in app_assets.keys())
+                asset_updated = any(game.app_version(_p, _a.namespace) != _a.build_version for _p in app_assets.keys() for _a in app_assets[_p])
                 # assuming sidecar data is the same for all platforms, just check the baseline (Windows) for updates.
-                sidecar_updated = (app_assets['Windows'].sidecar_rev > 0 and
-                                   (not game.sidecar or game.sidecar.rev != app_assets['Windows'].sidecar_rev))
+                sidecar_updated = any(_a.sidecar_rev > 0 and
+                                      (not game.sidecars or _a.namespace not in game.sidecars
+                                       or game.sidecars[_a.namespace].rev != _a.sidecar_rev)
+                                       for _a in app_assets['Windows'])
                 games[app_name] = game
 
             if update_assets and (not game or force_refresh or (game and (asset_updated or sidecar_updated))):
                 self.log.debug(f'Scheduling metadata update for {app_name}')
                 # namespace/catalog item are the same for all platforms, so we can just use the first one
-                _ga = next(iter(app_assets.values()))
-                fetch_list.append((app_name, _ga.namespace, _ga.catalog_item_id, sidecar_updated))
+                _gas = next(iter(app_assets.values()))
+                for _ga in _gas:
+                    fetch_list.append((app_name, _ga.namespace, _ga.catalog_item_id, sidecar_updated))
                 meta_updated = True
 
         def fetch_game_meta(args):
@@ -453,7 +466,6 @@ class LegendaryCore:
                 self.log.warning(f'App {app_name} does not have any metadata!')
                 eg_meta = dict(title='Unknown')
 
-            sidecar = None
             if update_sidecar:
                 self.log.debug(f'Updating sidecar information for {app_name}...')
                 manifest_api_response = self.egs.get_game_manifest(namespace, catalog_item_id, app_name)
@@ -462,9 +474,13 @@ class LegendaryCore:
                 if 'sidecar' in manifest_info:
                     sidecar_json = json.loads(manifest_info['sidecar']['config'])
                     sidecar = Sidecar(config=sidecar_json, rev=manifest_info['sidecar']['rvn'])
+                    if not app_name in sidecars:
+                        sidecars[app_name] = {namespace: sidecar}
+                    else:
+                        sidecars[app_name].update({namespace:sidecar})
 
             game = Game(app_name=app_name, app_title=eg_meta['title'], metadata=eg_meta, asset_infos=assets[app_name],
-                        sidecar=sidecar)
+                        sidecars=sidecars.get(app_name))
             self.lgd.set_game_meta(game.app_name, game)
             games[app_name] = game
             try:
@@ -482,7 +498,7 @@ class LegendaryCore:
                     executor.map(fetch_game_meta, fetch_list, timeout=60.0)
 
         for app_name, app_assets in sorted(assets.items()):
-            if skip_ue and any(v.namespace == 'ue' for v in app_assets.values()):
+            if skip_ue and any(v.namespace == 'ue' for a in app_assets.values() for v in a):
                 continue
 
             game = games.get(app_name)
@@ -490,8 +506,9 @@ class LegendaryCore:
             if not game or app_name in still_needs_update:
                 if use_threads:
                     self.log.warning(f'Fetching metadata for {app_name} failed, retrying')
-                _ga = next(iter(app_assets.values()))
-                fetch_game_meta((app_name, _ga.namespace, _ga.catalog_item_id, True))
+                _gas = next(iter(app_assets.values()))
+                for _ga in _gas:
+                    fetch_game_meta((app_name, _ga.namespace, _ga.catalog_item_id, True))
                 game = games[app_name]
 
             if game.is_dlc and platform in app_assets:
@@ -499,6 +516,15 @@ class LegendaryCore:
             elif not any(i['path'] == 'mods' for i in game.metadata.get('categories', [])) and platform in app_assets:
                 _ret.append(game)
 
+        # append info about each library entry per namespace
+        for record in library_items:
+            record_type = record.get("recordType")
+            if record_type and (record_type.lower() != "application"):
+                continue
+            if game := games.get(record["appName"]):
+                game.namespaces.update({record["namespace"]: record})
+                self.lgd.set_game_meta(game.app_name, game)
+
         self.update_aliases(force=meta_updated)
         if meta_updated:
             self._prune_metadata()
@@ -541,14 +567,14 @@ class LegendaryCore:
         # broken old app name that we should always ignore
         ignore |= {'1'}
 
-        for libitem in self.egs.get_library_items():
+        for libitem in self.get_library_items():
             if libitem['namespace'] == 'ue' and skip_ue:
                 continue
             if 'appName' not in libitem:
                 continue
             if libitem['appName'] in ignore:
                 continue
-            if libitem['sandboxType'] == 'PRIVATE':
+            if libitem['sandboxType'].lower() == 'private':
                 continue
 
             game = self.lgd.get_game_meta(libitem['appName'])
@@ -777,11 +803,13 @@ class LegendaryCore:
             '-AUTH_TYPE=exchangecode',
             f'-epicapp={app_name}',
             '-epicenv=Prod'])
+        
+        namespace = install.namespace or game.namespace
 
         if install.requires_ot and not offline:
             self.log.info('Getting ownership token.')
-            ovt = self.egs.get_ownership_token(game.namespace, game.catalog_item_id)
-            ovt_path = os.path.join(self.lgd.get_tmp_path(), f'{game.namespace}{game.catalog_item_id}.ovt')
+            ovt = self.egs.get_ownership_token(namespace, game.catalog_item_id)
+            ovt_path = os.path.join(self.lgd.get_tmp_path(), f'{namespace}{game.catalog_item_id}.ovt')
             with open(ovt_path, 'wb') as f:
                 f.write(ovt)
             params.egl_parameters.append(f'-epicovt={ovt_path}')
@@ -795,10 +823,10 @@ class LegendaryCore:
             f'-epicusername={user_name}',
             f'-epicuserid={account_id}',
             f'-epiclocale={language_code}',
-            f'-epicsandboxid={game.namespace}'
+            f'-epicsandboxid={namespace}'
         ])
 
-        if sidecar := game.sidecar:
+        if sidecar := game.sidecars and game.sidecars.get(namespace):
             if deployment_id := sidecar.config.get('deploymentId', None):
                 params.egl_parameters.append(f'-epicdeploymentid={deployment_id}')
 
@@ -1244,8 +1272,9 @@ class LegendaryCore:
         old_bytes = self.lgd.load_manifest(app_name, igame.version, igame.platform)
         return old_bytes, igame.base_urls
 
-    def get_cdn_urls(self, game, platform='Windows'):
-        m_api_r = self.egs.get_game_manifest(game.namespace, game.catalog_item_id,
+    def get_cdn_urls(self, game, platform='Windows', namespace=None):
+        ns = namespace or game.namespace
+        m_api_r = self.egs.get_game_manifest(ns, game.catalog_item_id,
                                              game.app_name, platform)
 
         # never seen this outside the launcher itself, but if it happens: PANIC!
@@ -1268,8 +1297,8 @@ class LegendaryCore:
 
         return manifest_urls, base_urls, manifest_hash
 
-    def get_cdn_manifest(self, game, platform='Windows', disable_https=False):
-        manifest_urls, base_urls, manifest_hash = self.get_cdn_urls(game, platform)
+    def get_cdn_manifest(self, game, platform='Windows', namespace=None, disable_https=False):
+        manifest_urls, base_urls, manifest_hash = self.get_cdn_urls(game, platform, namespace)
         if not manifest_urls:
             raise ValueError('No manifest URLs returned by API')
 
@@ -1331,7 +1360,8 @@ class LegendaryCore:
                          repair: bool = False, repair_use_latest: bool = False,
                          disable_delta: bool = False, override_delta_manifest: str = '',
                          egl_guid: str = '', preferred_cdn: str = None,
-                         disable_https: bool = False, bind_ip: str = None) -> (DLManager, AnalysisResult, ManifestMeta):
+                         disable_https: bool = False, bind_ip: str = None,
+                         namespace: str = None) -> (DLManager, AnalysisResult, ManifestMeta):
         # load old manifest
         old_manifest = None
 
@@ -1363,7 +1393,7 @@ class LegendaryCore:
             if _base_urls:
                 base_urls = _base_urls
         else:
-            new_manifest_data, base_urls = self.get_cdn_manifest(game, platform, disable_https=disable_https)
+            new_manifest_data, base_urls = self.get_cdn_manifest(game, platform, namespace=namespace, disable_https=disable_https)
             # overwrite base urls in metadata with current ones to avoid using old/dead CDNs
             game.base_urls = base_urls
             # save base urls to game metadata
@@ -1539,7 +1569,8 @@ class LegendaryCore:
                               can_run_offline=offline == 'true', requires_ot=ot == 'true',
                               is_dlc=base_game is not None, install_size=anlres.install_size,
                               egl_guid=egl_guid, install_tags=file_install_tag,
-                              platform=platform, uninstaller=uninstaller)
+                              platform=platform, uninstaller=uninstaller,
+                              namespace=namespace)
 
         return dlm, anlres, igame
 
@@ -1888,10 +1919,10 @@ class LegendaryCore:
         # copy manifest and create mancpn file in .egstore folder
         with open(os.path.join(egstore_folder, f'{egl_game.installation_guid}.manifest', ), 'wb') as mf:
             mf.write(manifest_data)
-
+        ns = lgd_igame.namespace or lgd_game.namespace
         mancpn = dict(FormatVersion=0, AppName=app_name,
                       CatalogItemId=lgd_game.catalog_item_id,
-                      CatalogNamespace=lgd_game.namespace)
+                      CatalogNamespace=ns)
         with open(os.path.join(egstore_folder, f'{egl_game.installation_guid}.mancpn', ), 'w') as mcpnf:
             json.dump(mancpn, mcpnf, indent=4, sort_keys=True)
 
diff --git a/legendary/lfs/lgndry.py b/legendary/lfs/lgndry.py
index 2e9b0bf..dc65c87 100644
--- a/legendary/lfs/lgndry.py
+++ b/legendary/lfs/lgndry.py
@@ -37,6 +37,8 @@ class LGDLFS:
         self._user_data = None
         # EGS entitlements
         self._entitlements = None
+        # EGS library items
+        self._library_items = None
         # EGS asset data
         self._assets = None
         # EGS metadata
@@ -121,7 +123,8 @@ class LGDLFS:
         self._installed_lock = FileLock(os.path.join(self.path, 'installed.json') + '.lock')
 
         try:
-            self._installed = json.load(open(os.path.join(self.path, 'installed.json')))
+            with open(os.path.join(self.path, 'installed.json')) as f:
+                self._installed = json.load(f)
         except Exception as e:
             self.log.debug(f'Loading installed games failed: {e!r}')
             self._installed = None
@@ -129,7 +132,8 @@ class LGDLFS:
         # load existing app metadata
         for gm_file in os.listdir(os.path.join(self.path, 'metadata')):
             try:
-                _meta = json.load(open(os.path.join(self.path, 'metadata', gm_file)))
+                with open(os.path.join(self.path, 'metadata', gm_file)) as f:
+                    _meta = json.load(f)
                 self._game_metadata[_meta['app_name']] = _meta
             except Exception as e:
                 self.log.debug(f'Loading game meta file "{gm_file}" failed: {e!r}')
@@ -138,7 +142,8 @@ class LGDLFS:
         self.aliases = dict()
         if not self.config.getboolean('Legendary', 'disable_auto_aliasing', fallback=False):
             try:
-                _j = json.load(open(os.path.join(self.path, 'aliases.json')))
+                with open(os.path.join(self.path, 'aliases.json')) as f:
+                    _j = json.load(f)
                 for app_name, aliases in _j.items():
                     for alias in aliases:
                         self.aliases[alias] = app_name
@@ -181,7 +186,8 @@ class LGDLFS:
             return self._entitlements
 
         try:
-            self._entitlements = json.load(open(os.path.join(self.path, 'entitlements.json')))
+            with open(os.path.join(self.path, 'entitlements.json')) as f:
+                self._entitlements = json.load(f)
             return self._entitlements
         except Exception as e:
             self.log.debug(f'Failed to load entitlements data: {e!r}')
@@ -193,14 +199,15 @@ class LGDLFS:
             raise ValueError('Entitlements is none!')
 
         self._entitlements = entitlements
-        json.dump(entitlements, open(os.path.join(self.path, 'entitlements.json'), 'w'),
-                  indent=2, sort_keys=True)
+        with open(os.path.join(self.path, 'entitlements.json'), 'w') as f:
+            json.dump(entitlements, f, indent=2, sort_keys=True)
 
     @property
     def assets(self):
         if self._assets is None:
             try:
-                tmp = json.load(open(os.path.join(self.path, 'assets.json')))
+                with open(os.path.join(self.path, 'assets.json')) as f:
+                    tmp = json.load(f)
                 self._assets = {k: [GameAsset.from_json(j) for j in v] for k, v in tmp.items()}
             except Exception as e:
                 self.log.debug(f'Failed to load assets data: {e!r}')
@@ -214,9 +221,29 @@ class LGDLFS:
             raise ValueError('Assets is none!')
 
         self._assets = assets
-        json.dump({platform: [a.__dict__ for a in assets] for platform, assets in self._assets.items()},
-                  open(os.path.join(self.path, 'assets.json'), 'w'),
-                  indent=2, sort_keys=True)
+        with open(os.path.join(self.path, 'assets.json'), 'w') as f:
+            json.dump({platform: [a.__dict__ for a in assets] for platform, assets in self._assets.items()},
+                      f, indent=2, sort_keys=True)
+        
+    @property
+    def library_items(self):
+        if self._library_items is not None:
+            return self._library_items
+        try:
+            with open(os.path.join(self.path, 'library_items.json')) as f:
+                self._library_items = json.load(f)
+            return self._library_items
+        except Exception as e:
+            self.log.debug(f'Failed to load library items data: {e!r}')
+            return None
+    
+    @library_items.setter
+    def library_items(self, library_items):
+        if library_items is None:
+            raise ValueError("Library items is none!")
+        self._library_items = library_items
+        with open(os.path.join(self.path, 'library_items.json'), 'w') as f:
+            json.dump(library_items, f, indent=2, sort_keys=True)
 
     def _get_manifest_filename(self, app_name, version, platform=None):
         if platform:
@@ -227,11 +254,13 @@ class LGDLFS:
 
     def load_manifest(self, app_name, version, platform='Windows'):
         try:
-            return open(self._get_manifest_filename(app_name, version, platform), 'rb').read()
+            with open(self._get_manifest_filename(app_name, version, platform), 'rb') as f:
+                return f.read()
         except FileNotFoundError:  # all other errors should propagate
             self.log.debug(f'Loading manifest failed, retrying without platform in filename...')
             try:
-                return open(self._get_manifest_filename(app_name, version), 'rb').read()
+                with open(self._get_manifest_filename(app_name, version), 'rb') as f:
+                    return f.read()
             except FileNotFoundError:  # all other errors should propagate
                 return None
 
@@ -248,7 +277,8 @@ class LGDLFS:
         json_meta = meta.__dict__
         self._game_metadata[app_name] = json_meta
         meta_file = os.path.join(self.path, 'metadata', f'{app_name}.json')
-        json.dump(json_meta, open(meta_file, 'w'), indent=2, sort_keys=True)
+        with open(meta_file, 'w') as f:
+            json.dump(json_meta, f, indent=2, sort_keys=True)
 
     def delete_game_meta(self, app_name):
         if app_name not in self._game_metadata:
@@ -312,7 +342,8 @@ class LGDLFS:
             self._installed_lock.acquire(blocking=False)
             # reload data in case it has been updated elsewhere
             try:
-                self._installed = json.load(open(os.path.join(self.path, 'installed.json')))
+                with open(os.path.join(self.path, 'installed.json')) as f:
+                    self._installed = json.load(f)
             except Exception as e:
                 self.log.debug(f'Failed to load installed game data: {e!r}')
 
@@ -323,7 +354,8 @@ class LGDLFS:
     def get_installed_game(self, app_name):
         if self._installed is None:
             try:
-                self._installed = json.load(open(os.path.join(self.path, 'installed.json')))
+                with open(os.path.join(self.path, 'installed.json')) as f:
+                    self._installed = json.load(f)
             except Exception as e:
                 self.log.debug(f'Failed to load installed game data: {e!r}')
                 return None
@@ -341,8 +373,8 @@ class LGDLFS:
         else:
             self._installed[app_name] = install_info.__dict__
 
-        json.dump(self._installed, open(os.path.join(self.path, 'installed.json'), 'w'),
-                  indent=2, sort_keys=True)
+        with open(os.path.join(self.path, 'installed.json'), 'w') as f:
+            json.dump(self._installed, f, indent=2, sort_keys=True)
 
     def remove_installed_game(self, app_name):
         if self._installed is None:
@@ -355,8 +387,8 @@ class LGDLFS:
             self.log.warning('Trying to remove non-installed game:', app_name)
             return
 
-        json.dump(self._installed, open(os.path.join(self.path, 'installed.json'), 'w'),
-                  indent=2, sort_keys=True)
+        with open(os.path.join(self.path, 'installed.json'), 'w') as f:
+            json.dump(self._installed, f, indent=2, sort_keys=True)
 
     def get_installed_list(self):
         if not self._installed:
@@ -387,7 +419,8 @@ class LGDLFS:
             return self._update_info
 
         try:
-            self._update_info = json.load(open(os.path.join(self.path, 'version.json')))
+            with open(os.path.join(self.path, 'version.json')) as f:
+                self._update_info = json.load(f)
         except Exception as e:
             self.log.debug(f'Failed to load cached update data: {e!r}')
             self._update_info = dict(last_update=0, data=None)
@@ -398,12 +431,13 @@ class LGDLFS:
         if not version_data:
             return
         self._update_info = dict(last_update=time(), data=version_data)
-        json.dump(self._update_info, open(os.path.join(self.path, 'version.json'), 'w'),
-                  indent=2, sort_keys=True)
+        with open(os.path.join(self.path, 'version.json'), 'w') as f:
+            json.dump(self._update_info, f, indent=2, sort_keys=True)
 
     def get_cached_sdl_data(self, app_name):
         try:
-            return json.load(open(os.path.join(self.path, 'tmp', f'{app_name}.json')))
+            with open(os.path.join(self.path, 'tmp', f'{app_name}.json')) as f:
+                return json.load(f)
         except Exception as e:
             self.log.debug(f'Failed to load cached SDL data: {e!r}')
             return None
@@ -411,17 +445,16 @@ class LGDLFS:
     def set_cached_sdl_data(self, app_name, sdl_version, sdl_data):
         if not app_name or not sdl_data:
             return
-        json.dump(dict(version=sdl_version, data=sdl_data),
-                  open(os.path.join(self.path, 'tmp', f'{app_name}.json'), 'w'),
-                  indent=2, sort_keys=True)
+        with open(os.path.join(self.path, 'tmp', f'{app_name}.json'), 'w') as f:
+            json.dump(dict(version=sdl_version, data=sdl_data), f, indent=2, sort_keys=True)
 
     def get_cached_overlay_version(self):
         if self._overlay_update_info:
             return self._overlay_update_info
 
         try:
-            self._overlay_update_info = json.load(open(
-                os.path.join(self.path, 'overlay_version.json')))
+            with open(os.path.join(self.path, 'overlay_version.json')) as f:
+                self._overlay_update_info = json.load(f)
         except Exception as e:
             self.log.debug(f'Failed to load cached Overlay update data: {e!r}')
             self._overlay_update_info = dict(last_update=0, data=None)
@@ -430,14 +463,14 @@ class LGDLFS:
 
     def set_cached_overlay_version(self, version_data):
         self._overlay_update_info = dict(last_update=time(), data=version_data)
-        json.dump(self._overlay_update_info,
-                  open(os.path.join(self.path, 'overlay_version.json'), 'w'),
-                  indent=2, sort_keys=True)
+        with open(os.path.join(self.path, 'overlay_version.json'), 'w') as f:
+            json.dump(self._overlay_update_info, f, indent=2, sort_keys=True)
 
     def get_overlay_install_info(self):
         if not self._overlay_install_info:
             try:
-                data = json.load(open(os.path.join(self.path, 'overlay_install.json')))
+                with open(os.path.join(self.path, 'overlay_install.json')) as f:
+                    data = json.load(f)
                 self._overlay_install_info = InstalledGame.from_json(data)
             except Exception as e:
                 self.log.debug(f'Failed to load overlay install data: {e!r}')
@@ -446,8 +479,8 @@ class LGDLFS:
 
     def set_overlay_install_info(self, igame: InstalledGame):
         self._overlay_install_info = igame
-        json.dump(vars(igame), open(os.path.join(self.path, 'overlay_install.json'), 'w'),
-                  indent=2, sort_keys=True)
+        with open(os.path.join(self.path, 'overlay_install.json'), 'w') as f:
+            json.dump(vars(igame), f, indent=2, sort_keys=True)
 
     def remove_overlay_install_info(self):
         try:
@@ -487,5 +520,5 @@ class LGDLFS:
             """Turn sets into sorted lists for storage"""
             return sorted(obj) if isinstance(obj, set) else obj
 
-        json.dump(alias_map, open(os.path.join(self.path, 'aliases.json'), 'w', newline='\n'),
-                  indent=2, sort_keys=True, default=serialise_sets)
+        with open(os.path.join(self.path, 'aliases.json'), 'w', newline='\n') as f:
+            json.dump(alias_map, f, indent=2, sort_keys=True, default=serialise_sets)
diff --git a/legendary/models/game.py b/legendary/models/game.py
index 5a7eec6..64749fd 100644
--- a/legendary/models/game.py
+++ b/legendary/models/game.py
@@ -71,15 +71,35 @@ class Game:
     app_name: str
     app_title: str
 
-    asset_infos: Dict[str, GameAsset] = field(default_factory=dict)
+    asset_infos: Dict[str, List[GameAsset]] = field(default_factory=dict)
     base_urls: List[str] = field(default_factory=list)
     metadata: Dict = field(default_factory=dict)
-    sidecar: Optional[Sidecar] = None
+    sidecars: Optional[Dict[str, Sidecar]] = None
+    namespaces: Dict = field(default_factory=dict)
 
-    def app_version(self, platform='Windows'):
+    def app_version(self, platform='Windows', namespace=None):
         if platform not in self.asset_infos:
             return None
-        return self.asset_infos[platform].build_version
+        if len(self.asset_infos[platform]) == 1:
+            return self.asset_infos[platform][0].build_version
+        
+        # Pick specified namespace, otherwise default to public one
+        if namespace is None:
+            return self._get_public_asset(platform).build_version
+        for asset in self.asset_infos[platform]:
+            if asset.namespace == namespace:
+                return asset.build_version
+
+        return self.asset_infos[platform][0].build_version
+    
+    def _get_public_asset(self, platform='Windows'):
+        if len(self.asset_infos[platform]) == 1:
+            return self.asset_infos[platform][0]
+        for asset in self.asset_infos[platform]:
+            version_namespace = self.namespaces.get(asset.namespace)
+            if version_namespace and version_namespace["sandboxType"].lower() == "public":
+                return asset
+        return self.asset_infos[platform][0]
 
     @property
     def is_dlc(self):
@@ -135,9 +155,10 @@ class Game:
 
     @property
     def namespace(self):
-        if not self.metadata:
-            return None
-        return self.metadata['namespace']
+        """Namespace of public asset"""
+        if self.asset_infos:
+            return self._get_public_asset().namespace
+        return self.metadata.get('namespace')
 
     @classmethod
     def from_json(cls, json):
@@ -146,14 +167,23 @@ class Game:
             app_title=json.get('app_title', ''),
         )
         tmp.metadata = json.get('metadata', dict())
-        if 'asset_infos' in json:
-            tmp.asset_infos = {k: GameAsset.from_json(v) for k, v in json['asset_infos'].items()}
+        if 'asset_infos_v2' in json:
+            tmp.asset_infos = {k: [GameAsset.from_json(a) for a in v] for k, v in json['asset_infos_v2'].items()}
+        elif 'asset_infos' in json:
+            # Migrate from one asset per platform to multiple
+            tmp.asset_infos = {k: [GameAsset.from_json(v)] for k, v in json['asset_infos'].items()}
         else:
             # Migrate old asset_info to new asset_infos
-            tmp.asset_infos['Windows'] = GameAsset.from_json(json.get('asset_info', dict()))
+            tmp.asset_infos['Windows'] = [GameAsset.from_json(json.get('asset_info', dict()))]
+        tmp.namespaces = json.get('namespaces', dict())
 
-        if sidecar := json.get('sidecar', None):
-            tmp.sidecar = Sidecar.from_json(sidecar)
+        # We used to get json.get('sidecar', None) here, lets drop that field and instead
+        # use per namespace mapping
+        if sidecars := json.get('sidecars', None):
+            tmp.sidecars = {namespace: Sidecar.from_json(sidecar) for namespace, sidecar in sidecars.items()}
+        elif sidecar := json.get('sidecar', None):
+            ns = tmp._get_public_asset().namespace
+            tmp.sidecars = {ns: Sidecar.from_json(sidecar)}
 
         tmp.base_urls = json.get('base_urls', list())
         return tmp
@@ -161,10 +191,11 @@ class Game:
     @property
     def __dict__(self):
         """This is just here so asset_infos gets turned into a dict as well"""
-        assets_dictified = {k: v.__dict__ for k, v in self.asset_infos.items()}
-        sidecar_dictified = self.sidecar.__dict__ if self.sidecar else None
-        return dict(metadata=self.metadata, asset_infos=assets_dictified, app_name=self.app_name,
-                    app_title=self.app_title, base_urls=self.base_urls, sidecar=sidecar_dictified)
+        assets_dictified = {k: [a.__dict__ for a in v] for k, v in self.asset_infos.items()}
+        sidecars_dictified = {k: s.__dict__ for k,s in self.sidecars.items()} if self.sidecars else None
+        return dict(metadata=self.metadata, asset_infos_v2=assets_dictified, app_name=self.app_name,
+                    app_title=self.app_title, base_urls=self.base_urls, sidecars=sidecars_dictified,
+                    namespaces=self.namespaces)
 
 
 @dataclass
@@ -176,6 +207,7 @@ class InstalledGame:
     install_path: str
     title: str
     version: str
+    namespace: Optional[str] = None
 
     base_urls: List[str] = field(default_factory=list)
     can_run_offline: bool = False
@@ -201,7 +233,7 @@ class InstalledGame:
             title=json.get('title', ''),
             version=json.get('version', ''),
         )
-
+        tmp.namespace = json.get('namespace', None)
         tmp.base_urls = json.get('base_urls', list())
         tmp.executable = json.get('executable', '')
         tmp.launch_parameters = json.get('launch_parameters', '')