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
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
- 3
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.
- 4
Attack on Inirea
Single-player alternative to Galactic Missile Defense — playable solo, no multiplayer required. Shares Action and Indie with Galactic Missile Defense.
In this family-friendly arcade-style shooter, you will take command of powerful weapons to defend the village of Inirea from hordes of monsters, gaining points and powerups as you progress through the game.
- 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
Night Light
Single-player alternative to Galactic Missile Defense — playable solo, no multiplayer required. Shares Action and Strategy with Galactic Missile Defense.
Defend against the creatures of that night! Protect yourself and your lamp by building and upgrading your base. Equip yourself with the best weapons to deal with the incoming waves.
- 7
Let Them Come
Single-player alternative to Galactic Missile Defense — playable solo, no multiplayer required. Shares Action and Indie with Galactic Missile Defense.
Let Them Come is a fast paced pixel art shoot ‘em up. Twitchy trigger fingers and focused battle tactics are the order of the day as wave after wave of alien-like creatures try to take you down.
- 8
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.