Steam playtest
Ships That Fight Underground (STFU)
A signup control was found on 2026-10-29 09:06. Admission is decided by the developer.
Participation is not guaranteed — access to a playtest is allocated by the developer and the rules can change. How it works · Voluntary support for the site
Experience a 6-degrees-of-freedom ship shooter across pulse pounding single player, co-op, and PvP gameplay. Choose your class and ship then customize and upgrade with unique cosmetics, powerful mods, and class-based tech trees. Level up and light em' up!
What a Steam playtest is
A playtest is a test build of a game that developers offer before release. On Steam you sign up for testing on the game's page. Whether you get access immediately, or the developer invites you first, is decided by the developer and can change.
More games with a playtest
This game is part of the Playtest Atlas overview — 3645 games in the catalogue.