Fallout Shelter — Steam Launch Options

12 community-verified launch options for Fallout Shelter on Steam ↗.

DeveloperBethesda Game Studios

PublisherBethesda Softworks

Released2017-03-29

EngineUnity Engine

-force-low-power-device

Uses integrated GPU for battery life (macOS).

Unity Documentation
✅ Verified
-popupwindow

Creates borderless popup window in Unity games.

Unity Documentation
✅ Verified
-force-opengl

Forces OpenGL rendering (legacy) in Unity games.

Unity Documentation
✅ Verified
-screen-height

Set vertical screen resolution (e.g., -screen-height 1080)

Unity Engine
-force-vulkan

Forces Vulkan rendering API in Unity games.

Unity Documentation
✅ Verified
PROTON_USE_WINED3D=1

Proton/Wine compatibility option.

ProtonDB
PROTON_USE_WINED3D11=1

Proton/Wine compatibility option.

ProtonDB
PROTON_NO_D3D11=1

Proton/Wine compatibility option.

ProtonDB
-force-d3d11

Forces DirectX 11 rendering (Windows only) in Unity games.

Unity Documentation
✅ Verified
-screen-width

Set horizontal screen resolution (e.g., -screen-width 1920)

Unity Engine
-window-mode

Set window mode: exclusive, windowed, or borderless

Unity Engine
-force-d3d12

Forces DirectX 12 rendering (Windows only) in Unity games.

Unity Documentation
✅ Verified