Single-player games like Space Defense
Below are 8 single-player Steam games similar to Space 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 Space Defense page.
Ranked picks
- 1
THE DREADFUL SPACE
Single-player alternative to Space Defense — playable solo, no multiplayer required. Shares Action and Indie with Space Defense.
A fast-paced space war game packed with intense action! Test your reflexes as you dodge enemy fire and strike back using every powerful resource you can find. The combat is dynamic and relentless, challenging your skills as a true space war pilot.
- 2
Timeloop Titans
Single-player alternative to Space Defense — playable solo, no multiplayer required. Shares Action and Indie with Space Defense.
Timeloop Titans is a fast-paced space arcade shooter where you defend the breathtaking Planet Gaia from relentless alien invasions. Upgrade your ship, conquer challenges, and save humanity in this cosmic battle for survival!
- 3
DRUM'N'BASS MASSACRE
Single-player alternative to Space Defense — playable solo, no multiplayer required. Shares Action and Casual with Space Defense.
DRUM'N'BASS MASSACRE is a high-velocity aerial combat shooter where you destoy your enemies while performing unimaginable maneuvers using your interstellar interceptor, accompanied by original drum and bass soundtrack
- 4
Solaris - Arcade Edition
Single-player alternative to Space Defense — playable solo, no multiplayer required. Shares Action and Indie with Space Defense.
You take control from a spaceship called DV-01 to towards on stages until reach the "Special Stage" that is endless! Shoot on enemies to earn more points this is the focus. Enjoy! This is the Arcade Version from "Solaris The Second Law".
- 5
Raiden IV x MIKADO remix
Single-player alternative to Space Defense — playable solo, no multiplayer required. Shares Action with Space Defense.
Buckle up and blast off with Raiden IV x MIKADO remix! This classic arcade shoot ‘em up comes fully equipped with new music, battle modes, vertical screen play, and more!
- 6
Space War: Infinity
Single-player alternative to Space Defense — playable solo, no multiplayer required. Shares Action and Indie with Space Defense.
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.
- 7
Slordax: The Unknown Enemy
Single-player alternative to Space Defense — playable solo, no multiplayer required. Shares Action with Space Defense.
In this classic top-down shoot 'em up, fly the deadliest ship in the galaxy on a dangerous first-strike mission to annihilate an alien threat before they become too powerful to stop. Pick up upgrades from fallen enemies along the way and become an unstoppable force!
- 8
Raiden III x MIKADO MANIAX
Single-player alternative to Space Defense — playable solo, no multiplayer required. Shares Action with Space Defense.
Soar sky-high in Raiden III x MIKADO MANIAX, an electrifying entry in the classic arcade shoot-‘em-up series! Customize your music, wallpapers, game mode, and more before launching into high-octane aerial action!