Free games like Ammo and Oxygen
Below are 8 free-to-play Steam games similar to Ammo and Oxygen, 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 Ammo and Oxygen page.
Ranked picks
- 1
Iron Snout
Free-to-play alternative to Ammo and Oxygen — no purchase or trial window. Shares Action and Indie with Ammo and Oxygen.
Iron Snout is a fast, colorful and brutal fighting game in which you will be helping a piglet fight for its life against hordes of wolves.
- 2
Disfigure
Free-to-play alternative to Ammo and Oxygen — no purchase or trial window. Shares Action and Indie with Ammo and Oxygen.
Disfigure is a grim-dark action rogue-like where you battle relentless hordes of monsters lurking in the shadows. Unlock powerful weapons, craft god-like builds with hundreds of upgrades, slay colossal bosses, and push your limits in intense 20–30 minute survival runs!
- 3
I MAED A GAM3 W1TH Z0MB1ES 1N IT!!!1
Free-to-play alternative to Ammo and Oxygen — no purchase or trial window. Shares Action and Indie with Ammo and Oxygen.
A top down twin stick zombie slaying shooter that you are sure to play again and again!
- 4
Waves
Free-to-play alternative to Ammo and Oxygen — no purchase or trial window. Shares Action and Indie with Ammo and Oxygen.
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!
- 5
Evil Egg
Free-to-play alternative to Ammo and Oxygen — no purchase or trial window. Shares Action with Ammo and Oxygen.
Blast it all to hell.
- 6
Wires And Whiskers
Free-to-play alternative to Ammo and Oxygen — no purchase or trial window. Shares Action and Indie with Ammo and Oxygen.
Wires and Whiskers is a local co-op action-puzzle game where two players control a lab-engineered gerbil and its magnetic exosuit. Work together to fight mutated enemies, solve magnetic puzzles, and survive in a ruined, post-apocalyptic trench world.
- 7
SCP – Containment Breach
Free-to-play alternative to Ammo and Oxygen — no purchase or trial window. Shares Action and Indie with Ammo and Oxygen.
A procedural first-person horror adventure. You are on your own after something goes terribly wrong in this top-secret containment facility. Collect items to aid in your escape and try to uncover the truth, as horror lurks behind every door. Can you make it out alive?
- 8
Dirty Bomb®
Free-to-play alternative to Ammo and Oxygen — no purchase or trial window. Shares Action with Ammo and Oxygen.
Work together or die alone! Fight to restore peace to London or tear it down for profit in the most challenging team based shooter around.