Checkpoint64 offers 3 launch options for Valheim. A launch option is a switch the game reads from its command line when it starts. Tick the ones you want in Checkpoint64 and the app adds them every time you press LAUNCH, or type them into Steam yourself.
Every option and what it does
| Option | What it does |
|---|---|
-console | Enables the developer console, opened with F5 in game. |
-window-mode exclusive | Windows only: uses exclusive fullscreen instead of borderless; can help performance but may cause issues when tabbing out. |
-force-vulkan | Renders with Vulkan instead of DirectX on Windows. |
Launching Valheim with them in Checkpoint64
- Open your Valheim save in Checkpoint64. LAUNCH appears there when the game is installed through Steam on that PC.
- Open Launch options under it and tick the ones you want — each shows the explanation above.
- Press LAUNCH: Checkpoint64 starts Valheim through Steam with the options you ticked.
Your picks are saved to your Checkpoint64 account per platform, so a Windows PC and a Linux machine each keep their own set.
Adding them in Steam yourself
- In your Steam Library, right-click Valheim and choose Properties.
- On the General tab, find Launch Options.
- Type the options you want, separated by spaces — for example
-console -window-mode exclusive— and close the window.
Launch options change how Valheim starts, not your saves. If the game won't start after adding one, take it back out.
Where Valheim keeps its saves: Valheim save file location. For how its saves break and how to roll one back, read the Valheim save backup guide.