Free games like UBOAT
Below are 8 free-to-play Steam games similar to UBOAT, ranked by player overlap and content similarity. No purchase or Steam login required to view the list. Every pick is a full free-to-play title — not a demo, trial, or time-limited giveaway. imho.run's catalogue refreshes daily, so newly free or newly popular titles surface here without manual editing.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like UBOAT page.
Ranked picks
- 1
Ultimate Custom Night
Free-to-play alternative to UBOAT — no purchase or trial window. Shares Action and Indie with UBOAT.
Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!
- 2
The Expendabros
Free-to-play alternative to UBOAT — no purchase or trial window. Shares Action and Indie with UBOAT.
The Expendabros have assembled and set their sights on the forces of ruthless arms dealer Conrad Stonebanks in the forests of Eastern Europe.
- 3
Steam Engine Simulator
Free-to-play alternative to UBOAT — no purchase or trial window. Shares Simulation with UBOAT.
The Steam Engine Simulator shown on AngeTheGreat's YouTube channel.
- 4
The Lab
Free-to-play alternative to UBOAT — no purchase or trial window.
Welcome to The Lab, a compilation of Valve’s room-scale VR experiments set in a pocket universe within Aperture Science. Fix a robot, defend a castle, adopt a mechanical dog, and more. Still not sold? It’s free!
- 5
Landfall Archives
Free-to-play alternative to UBOAT — no purchase or trial window. Shares Action and Strategy with UBOAT.
Break into the Landfall Archives to steal and play previously unreleased games, demos, interactive slide shows, and even an unreleased version of Totally Accurate Battle Simulator from 2017!
- 6
SuchArt: Creative Space
Free-to-play alternative to UBOAT — no purchase or trial window. Shares Action and Indie with UBOAT.
Paint on any surfaces with numerous tools in Creative Space — a free sandbox version of SuchArt: Genius Artist Simulator. Create masterpieces, complete commissions, and decorate your studio in the most advanced artist sim!
- 7
The Riftbreaker: Prologue
Free-to-play alternative to UBOAT — no purchase or trial window. Shares Action and Strategy with UBOAT.
The Riftbreaker: Prologue allows you to experience the events taking place before the story campaign of the main game. Explore an entirely new world. Gather resources. Build up a base. Defend yourself from thousands of alien creatures.
- 8
Jigsaw Puzzle Dreams
Free-to-play alternative to UBOAT — no purchase or trial window. Shares Indie with UBOAT.
Beautiful Multiplayer Jigsaw Puzzle game where you can design the room you play in!