diff --git a/data/gtk/preferences.blp b/data/gtk/preferences.blp
index 9654c29..543a993 100644
--- a/data/gtk/preferences.blp
+++ b/data/gtk/preferences.blp
@@ -85,6 +85,19 @@ template $PreferencesWindow : Adw.PreferencesWindow {
     title: _("Import");
     icon-name: "document-save-symbolic";
 
+    Adw.PreferencesGroup import_behavior_group {
+      title: _("Behavior");
+
+      Adw.ActionRow {
+        title: _("Remove Missing Games");
+        activatable-widget: remove_missing_switch;
+
+        Switch remove_missing_switch {
+          valign: center;
+        }
+      }
+    }
+
     Adw.PreferencesGroup sources_group {
       title: _("Sources");
 
diff --git a/data/hu.kramo.Cartridges.gschema.xml.in b/data/hu.kramo.Cartridges.gschema.xml.in
index d31c2ed..9003a93 100644
--- a/data/hu.kramo.Cartridges.gschema.xml.in
+++ b/data/hu.kramo.Cartridges.gschema.xml.in
@@ -10,6 +10,9 @@
     <key name="high-quality-images" type="b">
       <default>false</default>
     </key>
+    <key name="remove-missing" type="b">
+      <default>true</default>
+    </key>
     <key name="steam" type="b">
       <default>true</default>
     </key>
diff --git a/src/importer/importer.py b/src/importer/importer.py
index 756ea3b..f3d95cb 100644
--- a/src/importer/importer.py
+++ b/src/importer/importer.py
@@ -49,8 +49,15 @@ class Importer(ErrorProducer):
     n_pipelines_done: int = 0
     game_pipelines: set[Pipeline] = None
 
+    removed_games: set[Game] = set()
+
     def __init__(self):
         super().__init__()
+
+        # TODO: make this stateful
+        shared.store.new_game_ids = set()
+        shared.store.duplicate_game_ids = set()
+
         self.game_pipelines = set()
         self.sources = set()
 
@@ -217,9 +224,36 @@ class Importer(ErrorProducer):
         if self.finished:
             self.import_callback()
 
+    def remove_games(self):
+        """Set removed to True for missing games"""
+        if not shared.schema.get_boolean("remove-missing"):
+            return
+
+        for game in shared.store:
+            if game.removed:
+                continue
+            if game.source == "imported":
+                continue
+            if not shared.schema.get_boolean(game.base_source):
+                continue
+            if game.game_id in shared.store.duplicate_game_ids:
+                continue
+            if game.game_id in shared.store.new_game_ids:
+                continue
+
+            logging.debug("Removing missing game %s (%s)", game.name, game.game_id)
+
+            game.removed = True
+            game.save()
+            game.update()
+            self.removed_games.add(game)
+
     def import_callback(self):
         """Callback called when importing has finished"""
         logging.info("Import done")
+        self.remove_games()
+        shared.store.new_game_ids = set()
+        shared.store.duplicate_game_ids = set()
         self.import_dialog.close()
         self.summary_toast = self.create_summary_toast()
         self.create_error_dialog()
diff --git a/src/preferences.py b/src/preferences.py
index 6b7d105..a3172ac 100644
--- a/src/preferences.py
+++ b/src/preferences.py
@@ -52,6 +52,8 @@ class PreferencesWindow(Adw.PreferencesWindow):
     cover_launches_game_switch = Gtk.Template.Child()
     high_quality_images_switch = Gtk.Template.Child()
 
+    remove_missing_switch = Gtk.Template.Child()
+
     steam_expander_row = Gtk.Template.Child()
     steam_data_action_row = Gtk.Template.Child()
     steam_data_file_chooser_button = Gtk.Template.Child()
@@ -184,6 +186,7 @@ class PreferencesWindow(Adw.PreferencesWindow):
                 "exit-after-launch",
                 "cover-launches-game",
                 "high-quality-images",
+                "remove-missing",
                 "lutris-import-steam",
                 "lutris-import-flatpak",
                 "heroic-import-epic",
diff --git a/src/store/store.py b/src/store/store.py
index 231bbdc..0e07749 100644
--- a/src/store/store.py
+++ b/src/store/store.py
@@ -18,7 +18,7 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 
 import logging
-from typing import MutableMapping, Generator, Any
+from typing import Any, Generator, MutableMapping
 
 from src import shared
 from src.game import Game
@@ -33,12 +33,16 @@ class Store:
     pipeline_managers: set[Manager]
     pipelines: dict[str, Pipeline]
     source_games: MutableMapping[str, MutableMapping[str, Game]]
+    new_game_ids: set[str]
+    duplicate_game_ids: set[str]
 
     def __init__(self) -> None:
         self.managers = {}
         self.pipeline_managers = set()
         self.pipelines = {}
         self.source_games = {}
+        self.new_game_ids = set()
+        self.duplicate_game_ids = set()
 
     def __contains__(self, obj: object) -> bool:
         """Check if the game is present in the store with the `in` keyword"""
@@ -114,6 +118,7 @@ class Store:
         if not stored_game:
             # New game, do as normal
             logging.debug("New store game %s (%s)", game.name, game.game_id)
+            self.new_game_ids.add(game.game_id)
         elif stored_game.removed:
             # Will replace a removed game, cleanup its remains
             logging.debug(
@@ -125,6 +130,7 @@ class Store:
         else:
             # Duplicate game, ignore it
             logging.debug("Duplicate store game %s (%s)", game.name, game.game_id)
+            self.duplicate_game_ids.add(game.game_id)
             return None
 
         # Connect signals