Single-player games like Alpha Star
Below are 8 single-player Steam games similar to Alpha Star, 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 Alpha Star page.
Ranked picks
- 1
Seven Suns of Orion
Single-player alternative to Alpha Star — playable solo, no multiplayer required. Shares Action and Indie with Alpha Star.
A fast paced bullet heaven, control your Sci-fi spaceships with semi-newtonian physics. Last 7 minutes against the drone armada until their boss arrives and fight your way to freedom! Use planetary gravity and other hazards to dodge superior numbers. Collect and combine weapons for maximum firepower
- 2
Galactagon
Single-player alternative to Alpha Star — playable solo, no multiplayer required. Shares Action with Alpha Star.
Battle through endless cosmic hordes in a galaxy where your choices shape each run. Upgrade and collect a huge variety of weapons and upgrades to create unique builds. Customize the arena itself by adding new areas to it, each new area bringing it's own dangers and rewards.
- 3
Into The Void
Single-player alternative to Alpha Star — playable solo, no multiplayer required. Shares Action and Indie with Alpha Star.
A wormhole has opened up letting aliens terrorize your city. Pilot your spacecraft and destroy the aliens using flamethrowers, missiles, gatling guns, shockwaves, and more!
- 4
A-Spec First Assault
Single-player alternative to Alpha Star — playable solo, no multiplayer required. Shares Action and Indie with Alpha Star.
Fly corvette-class warships. Engage in combat operations against fighters, frigates, cruisers, and more dangerous foes. Choose the ships, weapons, and improvement modules, your group will deploy with. Use tactical command decisions to overcome dangerous encounters with unrelenting enemies.
- 5
VOIDRAVE
Single-player alternative to Alpha Star — playable solo, no multiplayer required. Shares Action and Indie with Alpha Star.
A bullet hell shmup with a secret. 100 waves, 20 bosses, and the slow realization that the sector you're purging isn't a sector. You are not crossing the void. You are inside it.
- 6
Nebula Live: Galactic trials
Single-player alternative to Alpha Star — playable solo, no multiplayer required. Shares Action and Indie with Alpha Star.
Nebula Live is a 2D side-scrolling space shooter set in a galactic TV show where the audience controls the chaos. Fight through 13 levels as viewers vote for unpredictable events, send power-up drops, and influence your chances of survival before unlocking Endless Mode.
- 7
PolyDogfight
Single-player alternative to Alpha Star — playable solo, no multiplayer required. Shares Action and Indie with Alpha Star.
Prepare to Fly, Dodge, Shoot, and Destroy in PolyDogfight. Unlock all the planes and maps to find your style. Obliterate waves of planes in an open-air arena as quickly as possible to get the high score and top the global leaderboard!
- 8
Void Wars
Single-player alternative to Alpha Star — playable solo, no multiplayer required. Shares Action and Indie with Alpha Star.
Dodge, shoot and free the galaxy of the evil space mega corp. Use a variety of different weapons and spaceships, each with different playstyles to overcome many challenging levels.