Single-player games like Ai-(Onic)
Below are 7 single-player Steam games similar to Ai-(Onic), 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 Ai-(Onic) page.
Ranked picks
- 1

s&box
Single-player alternative to Ai-(Onic) — playable solo, no multiplayer required. Shares Action and Strategy with Ai-(Onic).
Our spiritual successor to Garry's Mod, this is a game creation platform built on the Source 2 engine. Play, create, and share games, explore community creations, and experience endless sandbox fun with powerful modern tools.
- 2

DotStrike
Single-player alternative to Ai-(Onic) — playable solo, no multiplayer required. Shares Action and Indie with Ai-(Onic).
DotStrike is a 3D online shooter in which alien invaders in the form of colored spheres fight each other in a seaport. But the aliens are not fighting alone.
- 3

Quack Attack
Single-player alternative to Ai-(Onic) — playable solo, no multiplayer required. Shares Action and Strategy with Ai-(Onic).
🚀 Join the Cubic Chaos! Get ready for a wild ride in this 4v4 FPS arena on a cube planet. Choose your animal, collect ducks, and let limbs fly in this cartoon mayhem. With collectible weapons, multiplayer and voice chat, it's a fun carnage at its finest! 🦆💣🎮
- 4

Forest
Single-player alternative to Ai-(Onic) — playable solo, no multiplayer required. Shares Action and Indie with Ai-(Onic).
Forest is a multiplayer first-person shooter with an emphasis on realism. This game has a minimum of casual aspects, you won't see the usual crosshair in the center of the screen, health and ammo counter. Everything is done so that the immersion is maximum
- 5

Decisive Strike
Single-player alternative to Ai-(Onic) — playable solo, no multiplayer required. Shares Action and Indie with Ai-(Onic).
A sci-fi team-based Third Person Shooter where strategy is as important as your reflexes.
- 6

Trianga's Project: Battle Splash 2.0
Single-player alternative to Ai-(Onic) — playable solo, no multiplayer required. Shares Action and Indie with Ai-(Onic).
Full-Physics Water FPS/TPS, Class-based Action-packed Arena Shooter, Run & Gun with Rocket Jump, Single/Coop/Multiplayers, Survive Procedural Waves of Enemies, Lots of Game Modes, Endless Challenges and Replayability, with an Anime Beautiful Cast, and More...!
- 7

Altitude
Single-player alternative to Ai-(Onic) — playable solo, no multiplayer required. Shares Action and Strategy with Ai-(Onic).
Now Available on PC, Mac and Linux!