The Voidness is a SCI-FI psychological horror game where it takes place inside the void where it's filled with just gloom - the only way to see is by scanning the environment with your range finder device, however you are not alone. Don't breathe ... as they are listening.. and watching.
Valve is still working on adding support for this game on Steam Deck
SteamOS:
This game runs successfully on SteamOS
Note: Some functionality is not accessible when using the default controller configuration, requiring use of the touchscreen or virtual keyboard, or a community configuration
Note: This game does not default to external Bluetooth/USB controllers on SteamOS, and may require manually switching the active controller via the Quick Access Menu