Single-player games like Gamma Zero
Below are 8 single-player Steam games similar to Gamma Zero, 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 Gamma Zero page.
Ranked picks
- 1
XenoFeud
Single-player alternative to Gamma Zero — playable solo, no multiplayer required. Shares Action and Indie with Gamma Zero.
XenoFeud is an insane top-down twin-stick arcade alien shooter, where you must survive hordes of alien intruders while defending a mysterious object in space.
- 2
Storm Mined
Single-player alternative to Gamma Zero — playable solo, no multiplayer required. Shares Action and Indie with Gamma Zero.
Inspired by the cult classic Mine Storm, Storm Mined modernizes arcade space shooting with rogue-lite upgrades and rhythm-based stages.
- 3
Arcadia
Single-player alternative to Gamma Zero — playable solo, no multiplayer required. Shares Action with Gamma Zero.
In this highly addictive top-down arcade shoot-em-up from 1982, originally for the ZX Spectrum, defend yourself from wave upon wave of deadly alien combatants using your Ion Thrust Drive and dual Plasma Disruptors.
- 4
Blast'N Bounty
Single-player alternative to Gamma Zero — playable solo, no multiplayer required. Shares Action and Indie with Gamma Zero.
Blast’N Bounty is a vertical scrolling shoot’em up featuring 8 stages players can tackle in the order of their choosing. Cruise through a crazy solar system in a mix of pixel art and low poly 3D with action that’s easy to learn but tough to master!
- 5
Saturn Quest: Blast Effect
Single-player alternative to Gamma Zero — playable solo, no multiplayer required. Shares Action and Indie with Gamma Zero.
Saturn Quest: Blast Effect is a story-driven action adventure game set in the human-less galaxy far far away. Fly, climb, shoot, explore the world and fight the giant bosses in this 8 Bit style Space Opera, full of drama and epic.
- 6
GUNPIG: Firepower For Hire
Single-player alternative to Gamma Zero — playable solo, no multiplayer required. Shares Action and Indie with Gamma Zero.
Sci-fi top-down twin-stick shooter with 9 weapons, 3 alts and secret hidden collectibles!
- 7
Space War: Infinity
Single-player alternative to Gamma Zero — playable solo, no multiplayer required. Shares Action and Indie with Gamma Zero.
Vertical semi-procedural shmup with upgrades, real-time enemy waves, and infinite replayability. Level up your ship, unlock 20+ weapons, defeat 5 bosses, and survive endless bullet-hell combat.
- 8
Cosmonator
Single-player alternative to Gamma Zero — playable solo, no multiplayer required. Shares Action and Indie with Gamma Zero.
Cosmonator is an 'RPG-em-up': a hybrid of classic fast-paced top-down shoot-em-up action infused with deep character building elements. Build up your own unique alien-killing machine to avenge the destruction of planet Earth!