Single-player games like Galactic Missile Defense
Below are 8 single-player Steam games similar to Galactic Missile Defense, 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 Galactic Missile Defense page.
Ranked picks
- 1
Turret Rampage
Single-player alternative to Galactic Missile Defense — playable solo, no multiplayer required. Shares Action and Indie with Galactic Missile Defense.
Defend humanity from underground monsters as the last standing turret! Force burrowers out of the ground with an artificial earthquake, capture elusive ghosts with silver shackles, and shatter alien bugs into pieces using powerful rockets!
- 2
Click Here
Single-player alternative to Galactic Missile Defense — playable solo, no multiplayer required. Shares Action and Strategy with Galactic Missile Defense.
Hmm, looks like you've clicked here. Now, it's time to click even more. Train your reflexes and test your mental stability, as you Click Here.
- 3
Bitosphere
Single-player alternative to Galactic Missile Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Galactic Missile Defense.
Embark on a Galactic Adventure in Bitosphere a Captivating 1-bit Clicker Game
- 4
BLUE SHIP
Single-player alternative to Galactic Missile Defense — playable solo, no multiplayer required. Shares Action and Indie with Galactic Missile Defense.
Choose from ships with distinct combat styles, unleash devastating skills, and carve a path through relentless enemy barrages. BLUE SHIP is a compact, high-intensity 2D vertical-scrolling shoot ’em up featuring Story, Boss Practice, Time Attack, and Endless modes.
- 5
XenoFeud
Single-player alternative to Galactic Missile Defense — playable solo, no multiplayer required. Shares Action and Indie with Galactic Missile Defense.
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.
- 6
Timberman
Single-player alternative to Galactic Missile Defense — playable solo, no multiplayer required. Shares Action and Indie with Galactic Missile Defense.
Become a Timberman, chop wood and avoid the branches. Almost 30 million players could not be wrong - featured as one of the best casual games.
- 7
Space Fuel
Single-player alternative to Galactic Missile Defense — playable solo, no multiplayer required. Shares Action and Indie with Galactic Missile Defense.
Bite-sized arcade shmup. Slam enemies, beat Bosses, get power-ups and repeat! Pilot your ship through deep space.
- 8
Asteroid Patrol
Single-player alternative to Galactic Missile Defense — playable solo, no multiplayer required. Shares Action and Indie with Galactic Missile Defense.
Bang bang! Shoot raining asteroids, dodge attacks of flying insects and battle against huge weird monsters! Gain exp, level up, pick perk and then rinse & repeat. Story? Nobody cares. If you are looking for a difficult and punishing game, don't leave without playing this one.