Single-player games like Galaxy Annihilation
Below are 13 single-player Steam games similar to Galaxy Annihilation, 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 Galaxy Annihilation page.
Ranked picks
- 1
Space Drift Squad
Single-player alternative to Galaxy Annihilation — playable solo, no multiplayer required. Shares Action and Indie with Galaxy Annihilation.
Call your friends and lead your squad through the outer space and protect your planet from asteroids and alien ships on this local shoot'em up. Shoot, evolve e explode these space enemies.
- 2
Rescue Guardian Blaster
Single-player alternative to Galaxy Annihilation — playable solo, no multiplayer required. Shares Action and Indie with Galaxy Annihilation.
Rescue Guardian Blaster is a fast-paced, score-focused shoot 'em up! Destroy enemy ships by matching your ship's gun color to the enemy's to earn more points, all while tracking your score against the best players or your friends.
- 3
Unknown Hero
Single-player alternative to Galaxy Annihilation — playable solo, no multiplayer required. Shares Action and Indie with Galaxy Annihilation.
Brace yourself for an intense bullet hell experience! Fight your way through challenging levels, defeat bosses, upgrade your weapon and get the highest score!
- 4
The Battle of Aurinoxia
Single-player alternative to Galaxy Annihilation — playable solo, no multiplayer required. Shares Action and Indie with Galaxy Annihilation.
A retro space shoot 'em up with pixel art graphics, unique enemies, tough angry bosses, and a killer soundtrack. You are among the first pilots to arrive in the system to mount the counteroffensive against the aggressors. Get out there and show these aliens the price for messing with The Alliance!
- 5
WDF
Single-player alternative to Galaxy Annihilation — playable solo, no multiplayer required. Shares Action and Indie with Galaxy Annihilation.
‘WDF’, is a horizontal shmup game with a Boss-rush style in that the difficulty will increase slightly after the player clears all stages and continues to the next loop. Each loop will be different from the other. Also, it has a main campaign mode with a longer stage and weapon upgrades.
- 6
Super Rebellion
Single-player alternative to Galaxy Annihilation — playable solo, no multiplayer required. Shares Action and Indie with Galaxy Annihilation.
The humanity succumbed against the power of a aliens intergalactic empire, but managed to organize and establish a resistance army. Join the rebellious seekers of peace and help them defeat the evil that haunts the Earth.
- 7
Shooting Stars!
Single-player alternative to Galaxy Annihilation — playable solo, no multiplayer required. Shares Action and Indie with Galaxy Annihilation.
This game is the answer to one of the most important questions in life: “I can haz lazer kitty?“ Yes you can!
- 8
Overdriven Reloaded
Single-player alternative to Galaxy Annihilation — playable solo, no multiplayer required. Shares Action and Indie with Galaxy Annihilation.
Shoot' Em Up, Vertical Fast & Fun !The Overdriven Ship is back :More better, more intense, and more beautiful !
- 9
Endless Treasure Hunt
Single-player alternative to Galaxy Annihilation — playable solo, no multiplayer required. Shares Action and Indie with Galaxy Annihilation.
Endless Treasure Hunt is a colorful endless runner, your job is to collect as many coins and materials as possible to buy new submarines, warships and helicopters to increase the maximum distance traveled.
- 10
Boomer Rampage
Single-player alternative to Galaxy Annihilation — playable solo, no multiplayer required. Shares Action and Indie with Galaxy Annihilation.
Boomer Rampage is a puzzle game in which we control the boomers rocket hand. Our task is to destroy the target, avoiding enemies, traps and walls in all the 90 levels.
- 11
Flatwaters: The Curse of Echita
Single-player alternative to Galaxy Annihilation — playable solo, no multiplayer required. Shares Action and Indie with Galaxy Annihilation.
Flatwaters: The Curse of Echita is an open world game in which we will have to conquer each island of the city "Echita" and loot all the treasures in it.
- 12
The Endless White
Single-player alternative to Galaxy Annihilation — playable solo, no multiplayer required. Shares Action and Indie with Galaxy Annihilation.
The Endless White is a survival game, in which we will have to procure food, water and shelter from the freezing temperatures of the Alaska, in order to be able to repair the helicopter with which we had to perform an emergency landing following a failure to the engine.
- 13
TetraDice
Single-player alternative to Galaxy Annihilation — playable solo, no multiplayer required. Shares Indie with Galaxy Annihilation.
Forget everything you know about falling blocks. TetraDice blends classic arcade strategy with Roguelite powers and dice-driven chaos. Bend gravity, unleash explosions, and use 50+ Perks to survive and beat the high score.