diff --git a/data/hu.kramo.Cartridges.gschema.xml b/data/hu.kramo.Cartridges.gschema.xml
index 1230c42..abb05bd 100644
--- a/data/hu.kramo.Cartridges.gschema.xml
+++ b/data/hu.kramo.Cartridges.gschema.xml
@@ -17,7 +17,7 @@
       <default>"~/.steam/"</default>
     </key>
     <key name="steam-flatpak-location" type="s">
-      <default>~/.var/app/com.valvesoftware.Steam/data/Steam/</default>
+      <default>"~/.var/app/com.valvesoftware.Steam/data/Steam/"</default>
     </key>
     <key name="steam-windows-location" type="s">
       <default>"C:\Program Files (x86)\Steam"</default>
diff --git a/src/importer/sources/steam_source.py b/src/importer/sources/steam_source.py
index d548009..ed7edaf 100644
--- a/src/importer/sources/steam_source.py
+++ b/src/importer/sources/steam_source.py
@@ -1,32 +1,32 @@
-import re
-import logging
-from time import time
+from abc import abstractmethod
 from pathlib import Path
+from time import time
+from typing import Iterator
 
-import requests
 from requests import HTTPError, JSONDecodeError
 
 from src.game import Game
 from src.importer.source import Source, SourceIterator
 from src.utils.decorators import (
+    replaced_by_env_path,
     replaced_by_path,
     replaced_by_schema_key,
-    replaced_by_env_path,
 )
 from src.utils.save_cover import resize_cover, save_cover
-
-
-class SteamAPIError(Exception):
-    pass
+from src.utils.steam import (
+    SteamGameNotFoundError,
+    SteamHelper,
+    SteamInvalidManifestError,
+    SteamNotAGameError,
+)
 
 
 class SteamSourceIterator(SourceIterator):
     source: "SteamSource"
 
-    manifests = None
-    manifests_iterator = None
-
-    installed_state_mask = 4
+    manifests: set = None
+    manifests_iterator: Iterator[Path] = None
+    installed_state_mask: int = 4
 
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
@@ -60,36 +60,28 @@ class SteamSourceIterator(SourceIterator):
         return len(self.manifests)
 
     def __next__(self):
+        """Produce games"""
+
         # Get metadata from manifest
-        # Ignore manifests that don't have a value for all keys
-        manifest = next(self.manifests_iterator)
-        manifest_data = {"name": None, "appid": None, "StateFlags": "0"}
+        manifest_path = next(self.manifests_iterator)
+        steam = SteamHelper()
         try:
-            with open(manifest) as file:
-                contents = file.read()
-                for key in manifest_data:
-                    regex = f'"{key}"\s+"(.*)"\n'
-                    if (match := re.search(regex, contents)) is None:
-                        return None
-                    manifest_data[key] = match.group(1)
-        except OSError:
+            local_data = steam.get_manifest_data(manifest_path)
+        except (OSError, SteamInvalidManifestError):
             return None
 
         # Skip non installed games
-        if not int(manifest_data["StateFlags"]) & self.installed_state_mask:
+        if not int(local_data["StateFlags"]) & self.installed_state_mask:
             return None
 
-        # Build basic game
-        appid = manifest_data["appid"]
+        # Build game from local data
+        appid = local_data["appid"]
         values = {
             "added": int(time()),
-            "name": manifest_data["name"],
-            "hidden": False,
+            "name": local_data["name"],
             "source": self.source.id,
             "game_id": self.source.game_id_format.format(game_id=appid),
             "executable": self.source.executable_format.format(game_id=appid),
-            "blacklisted": False,
-            "developer": None,
         }
         game = Game(self.source.win, values, allow_side_effects=False)
 
@@ -101,39 +93,31 @@ class SteamSourceIterator(SourceIterator):
             / f"{appid}_library_600x900.jpg"
         )
         if cover_path.is_file():
-            save_cover(self.win, game.game_id, resize_cover(self.win, cover_path))
-
-        # Make Steam API call
-        try:
-            with requests.get(
-                "https://store.steampowered.com/api/appdetails?appids=%s"
-                % manifest_data["appid"],
-                timeout=5,
-            ) as response:
-                response.raise_for_status()
-                steam_api_data = response.json()[appid]
-        except (HTTPError, JSONDecodeError) as error:
-            logging.warning(
-                "Error while querying Steam API for %s (%s)",
-                manifest_data["name"],
-                manifest_data["appid"],
-                exc_info=error,
+            save_cover(
+                self.source.win, game.game_id, resize_cover(self.source.win, cover_path)
             )
-            return game
 
-        # Fill out new values
-        if not steam_api_data["success"] or steam_api_data["data"]["type"] != "game":
-            values["blacklisted"] = True
+        # Get online metadata
+        # TODO move to its own manager
+        try:
+            online_data = steam.get_api_data(appid=appid)
+        except (HTTPError, JSONDecodeError, SteamGameNotFoundError):
+            pass
+        except SteamNotAGameError:
+            game.update_values({"blacklisted": True})
         else:
-            values["developer"] = ", ".join(steam_api_data["data"]["developers"])
-        game.update_values(values)
+            game.update_values(online_data)
         return game
 
 
 class SteamSource(Source):
     name = "Steam"
     executable_format = "xdg-open steam://rungameid/{game_id}"
-    location = None
+
+    @property
+    @abstractmethod
+    def location(self) -> Path:
+        pass
 
     @property
     def is_installed(self):
diff --git a/src/utils/steam.py b/src/utils/steam.py
new file mode 100644
index 0000000..5e5677c
--- /dev/null
+++ b/src/utils/steam.py
@@ -0,0 +1,78 @@
+import re
+import logging
+from typing import TypedDict
+
+import requests
+from requests import HTTPError, JSONDecodeError
+
+
+class SteamError(Exception):
+    pass
+
+
+class SteamGameNotFoundError(SteamError):
+    pass
+
+
+class SteamNotAGameError(SteamError):
+    pass
+
+
+class SteamInvalidManifestError(SteamError):
+    pass
+
+
+class SteamManifestData(TypedDict):
+    name: str
+    appid: str
+    StateFlags: str
+
+
+class SteamAPIData(TypedDict):
+    developers: str
+
+
+class SteamHelper:
+    """Helper around the Steam API"""
+
+    base_url = "https://store.steampowered.com/api"
+
+    def get_manifest_data(self, manifest_path) -> SteamManifestData:
+        """Get local data for a game from its manifest"""
+
+        with open(manifest_path) as file:
+            contents = file.read()
+
+        data = {}
+
+        for key in SteamManifestData.__required_keys__:
+            regex = f'"{key}"\s+"(.*)"\n'
+            if (match := re.search(regex, contents)) is None:
+                raise SteamInvalidManifestError()
+            data[key] = match.group(1)
+
+        return SteamManifestData(**data)
+
+    def get_api_data(self, appid) -> SteamAPIData:
+        """Get online data for a game from its appid"""
+
+        try:
+            with requests.get(
+                f"{self.base_url}/appdetails?appids={appid}", timeout=5
+            ) as response:
+                response.raise_for_status()
+                data = response.json()[appid]
+
+        except (HTTPError, JSONDecodeError) as error:
+            logging.warning("Error while querying Steam API for %s", appid)
+            raise error
+
+        if not data["success"]:
+            raise SteamGameNotFoundError()
+
+        if data["data"]["type"] != "game":
+            raise SteamNotAGameError()
+
+        # Return API values we're interested in
+        values = SteamAPIData(developers=", ".join(data["data"]["developers"]))
+        return values