Free games like OSO
Below are 9 free-to-play Steam games similar to OSO, 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 OSO page.
Ranked picks
- 1
STRAFTAT
Free-to-play alternative to OSO — no purchase or trial window. Shares Action with OSO.
STRAFTAT is a 1v1/2v2 ONLINE first person SHOOTER with quick rounds in over 350 MAPS ; Including all WEAPONS, proximity chat and 4 players FFA.
- 2
![UNBEATABLE [white label] — Steam game cover](https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/1290490/header.jpg?t=1736770503)
UNBEATABLE [white label]
Free-to-play alternative to OSO — no purchase or trial window. Shares Action and Indie with OSO.
A young girl learns a song. An exclusive side-story set in the world of D-CELL GAMES' upcoming rhythm-adventure.
- 3
Electoral Carnage
Free-to-play alternative to OSO — no purchase or trial window. Shares Action and Early Access with OSO.
Electoral Carnage is an absurd 2D fighting game featuring America's most famous (and infamous) politicians. If you don't download it you hate America. Also JFK can assassinate himself. What more do you need to know?
- 4
Tukoni: Prologue
Free-to-play alternative to OSO — no purchase or trial window. Shares Indie with OSO.
Tukoni: Prologue is a point-and-click puzzle adventure, based on a series of award-winning books by the Ukrainian artist Oksana Bula. Play as Tukoni, the forest spirits, as you meet unique characters, solve captivating puzzles, craft new items, and explore a magical world filled with kindness.
- 5
Khimera: Destroy All Monster Girls
Free-to-play alternative to OSO — no purchase or trial window. Shares Action and Indie with OSO.
Play as Chelshia the chimera in this platforming beat-em-up adventure into the wonderful world of monster girls!
- 6
Wheelchair Wizards
Free-to-play alternative to OSO — no purchase or trial window. Shares Action and Indie with OSO.
Wheelchair Wizards is a 4 player party game where you battle your friends while upgrading your wizard.
- 7
Waves
Free-to-play alternative to OSO — no purchase or trial window. Shares Action and Indie with OSO.
Waves is an Arcade Twin-Stick Shooter that's all about High Scores. Build your combo and drop bombs in pursuit of Leaderboard dominance over seven game-modes!
- 8
Evil Egg
Free-to-play alternative to OSO — no purchase or trial window. Shares Action with OSO.
Blast it all to hell.
- 9
PUTERSHOOTER
Free-to-play alternative to OSO — no purchase or trial window. Shares Action with OSO.
PUTERSHOOTER is a game where weaponized computers fight through chaotic round-based PvP. Corrupt opponents with viruses, upgrade yourself with floppy disks, and build increasingly ridiculous combinations in fast-paced physics combat!