diff --git a/dzgui/managers/offline.py b/dzgui/managers/offline.py
new file mode 100644
index 0000000..ff69471
--- /dev/null
+++ b/dzgui/managers/offline.py
@@ -0,0 +1,43 @@
+from pathlib import Path
+from typing import Union
+
+from dzgui.api.steam import launch_offline
+from dzgui.const.enum import Preferences
+from dzgui.managers.threading import call_on_thread, ThreadingManager
+from dzgui.strings import dialogs
+from dzgui.util.symlinks import clone_symlinks
+
+
+class OfflineManager:
+    def __init__(
+        self,
+        appid: int,
+        mission: Union[Path, None] = None,
+        local_mods: Union[list[str], None] = None,
+        custom_mods: Union[list[str], None] = None,
+    ) -> None:
+        super().__init__()
+
+        self.thread_man = ThreadingManager()
+
+        self.appid = appid
+        self.mission_folder = mission
+        self.local_mods = local_mods
+        self.custom_mods = custom_mods
+
+        @call_on_thread(dialogs.waiting_for_launch)
+        def launch(self) -> None:
+            client = self.controller.query_config(Preferences.CLIENT)
+            name = self.controller.query_config(Preferences.NAME)
+            steam_path = self.controller.query_config(Preferences.DEFAULT)
+
+            new_symlinks: list[str] = []
+
+            combined_mods: list[str] = []
+            combined_mods.extend(self.local_mods)
+            combined_mods.extend(new_symlinks)
+
+            # TODO: cf. rebuild_symlinks
+
+            clone_symlinks(Path(steam_path))
+            launch_offline(client, self.appid, name, combined_mods)