Single-player games like Atmos
Below are 8 single-player Steam games similar to Atmos, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Atmos page.
Ranked picks
- 1

Slyders
Single-player alternative to Atmos — playable solo, no multiplayer required. Shares Action with Atmos.
Slyders is a survivor-like, roguelite bullet-hell FPS where you fight overwhelming hordes of enemies and unleash a ridiculous arsenal of upgrades. You’re Aryx, a fearless fox freedom fighter on his supersonic battle turtle who aims to liberate Sky World from evil.
- 2

Eternal Hatred
Single-player alternative to Atmos — playable solo, no multiplayer required. Shares Action and Indie with Atmos.
Eternal Hatred is a fast-paced indie shooter blending the aesthetics of ULTRAKILL and Quake. At its core lies a dark story about the nature of human cruelty and an attempt to drown out inner pain within the abyss of one's own consciousness.
- 3

Galactic Vault
Single-player alternative to Atmos — playable solo, no multiplayer required. Shares Action and Indie with Atmos.
Build your weapon to its full potential in Galactic Vault, a fast-paced FPS roguelite. Discover endless upgrade combinations, craft diverse builds, and unleash devastating abilities. Get ready to infiltrate high-security vaults and recover lost tech.
- 4

It Consumes
Single-player alternative to Atmos — playable solo, no multiplayer required. Shares Action with Atmos.
It Consumes is a frantic arena shooter that takes place in the dark. See by beating your heart to reveal your foes. Choose your preferred playstyle with both roguelite and classic modes, or use the extensive custom games editor to create your own game modes with unique rules and modifiers.
- 5

Gunstoppable
Single-player alternative to Atmos — playable solo, no multiplayer required. Shares Action and Indie with Atmos.
A momentum-fueled Roguelite FPS where speed is damage. Dual-wield overpowered weapon combos and bend time to obliterate hordes of robots and billionaire bosses!
- 6

LeadCount
Single-player alternative to Atmos — playable solo, no multiplayer required. Shares Action and Indie with Atmos.
Fight against thousands of enemies at a time on a wide-open map. Earn XP for every kill and level up to gain skill points for persistent permanent upgrades. Discover synergies between different weapons, upgrades, and power-ups, making each round unique.
- 7

Alien Grounds
Single-player alternative to Atmos — playable solo, no multiplayer required. Shares Action and Indie with Atmos.
Single-player arena shooter. Weird weapons. Relentless robots. Easy to play, hard to score. Enter the chaos, shoot the bots, and compete in the Monthly Challenge.
- 8

OmniGun
Single-player alternative to Atmos — playable solo, no multiplayer required. Shares Action and Indie with Atmos.
Obliterate hostile automatons in this vibrant physics-based roguelite FPS. Master the OmniGun, a prototype gun capable of firing any ammunition imaginable as you shoot, explode, burn, shock, slice, freeze, shrink, and impale your way to the exit.