Single-player games like Spaceman Defender
Below are 16 single-player Steam games similar to Spaceman Defender, 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 Spaceman Defender page.
Ranked picks
- 1
Earthion
Single-player alternative to Spaceman Defender — playable solo, no multiplayer required. Shares Action with Spaceman Defender.
Earthion is a side-scrolling space shooter developed natively for 16-bit systems. Guide space fighter pilot Azusa Takanashi in her fight to repel the alien invaders and save planet Earth.
- 2
Syder Arcade
Single-player alternative to Spaceman Defender — playable solo, no multiplayer required. Shares Action and Indie with Spaceman Defender.
Killing zombies never gets old, but sometimes you just need a break. Get back to some serious old-school gaming with Syder Arcade! Syder Arcade is a love letter to Amiga games of the ‘90s, no coins, no upgrade grinding, just your tenacity and a motherload of alien invaders.
- 3
DRAINUS
Single-player alternative to Spaceman Defender — playable solo, no multiplayer required. Shares Action and Indie with Spaceman Defender.
This is a side-scrolling shooting game in which you take control of the "Drainus", the Kharlal Empire's most cutting-edge fighter with the ability to absorb energy bullets, and take down the enemy ships zipping through space.
- 4
DARIUSBURST Chronicle Saviours
Single-player alternative to Spaceman Defender — playable solo, no multiplayer required. Shares Action with Spaceman Defender.
DARIUSBURST Chronicle Saviours is the latest installment in Taito's DARIUS series of arcade-style shooting games. Blast hordes of alien sea-monsters, and blaze your own trail through branching environments.
- 5
HUNTDOWN
Single-player alternative to Spaceman Defender — playable solo, no multiplayer required. Shares Action and Indie with Spaceman Defender.
In the mayhem-filled streets of the future where criminal gangs rule and cops fear to tread, only the bounty hunters can free the city from the corrupt fist of felony. Lay waste to the criminal underworld and make a killing in this hard boiled action comedy arcade shooter.
- 6
Dead Space™ 2
Single-player alternative to Spaceman Defender — playable solo, no multiplayer required. Shares Action with Spaceman Defender.
Three years after the Necromorph infestation aboard the USS Ishimura, Isaac Clarke awakens from a coma, confused, disoriented, and on a space station called The Sprawl. Explore this world and its zero-g environments to discover the truth about the Unitology and its role in the Necromorph epidemic.
- 7
REMOTE LIFE
Single-player alternative to Spaceman Defender — playable solo, no multiplayer required. Shares Action and Indie with Spaceman Defender.
Remote Life is a 2D Side scrolling space shooter (shmup) for PC. Experience a fast paced action game with insane scary graphics, and hyper jump into a brutal-frenetic-techno-alien world. Free the world from this dreadful nightmare before its nauseating breath of horror destroys mankind.
- 8
SATAZIUS
Single-player alternative to Spaceman Defender — playable solo, no multiplayer required. Shares Action and Indie with Spaceman Defender.
The year is 2051. Location: SATAZIUS, a long-abandoned planet. The cruiser Agano was on patrol when it was attacked and stricken by a confederacy of space pirates that had established a base on SATAZIUS. The pirates attacked the Agano intending to steal the assault ship ‘Trafalgar’ that was stowed aboard the Agano, but the Trafalgar made...
- 9
The Ultimate Trivia Challenge
Single-player alternative to Spaceman Defender — playable solo, no multiplayer required. Shares Indie with Spaceman Defender.
How well do you know your trivia? Choose from 9 popular categories and challenge friends and family in Party Mode (up to 4 players).
- 10
Super Arcade Boy in Defender of Planet Earth
Single-player alternative to Spaceman Defender — playable solo, no multiplayer required. Shares Action and Indie with Spaceman Defender.
A retro-style classic side-scrolling shoot ’em up. Fly Super Arcade Boy through 8 levels, blast enemy waves, grab power-ups, and take down bosses.
- 11
Brick Breaker Premium
Single-player alternative to Spaceman Defender — playable solo, no multiplayer required. Shares Action and Indie with Spaceman Defender.
The classic brick-breaker game is back! 35 challenging levels to complete with that classic brick breaker feel, heroic storyline, and classic power-ups. Unlock the ending cutscenes—if you’ve got the skill to make it that far.
- 12
Brick Breaker Premium 3
Single-player alternative to Spaceman Defender — playable solo, no multiplayer required. Shares Action and Indie with Spaceman Defender.
The arcade classic returns with the trilogy finale. Blast through 50 new levels to wipe out The Evil Snarfers for good. Use classic power-ups and the new Multi-Shot Laser Paddle to save Earth—and unlock the final ending cutscenes.
- 13
Trivia King
Single-player alternative to Spaceman Defender — playable solo, no multiplayer required. Shares Indie with Spaceman Defender.
Challenge yourself in Trivia King or play Party Mode (up to 4 players). Includes 8 popular categories and thousands of multiple-choice questions.
- 14
The Movie Trivia Challenge
Single-player alternative to Spaceman Defender — playable solo, no multiplayer required. Shares Indie with Spaceman Defender.
How well do you know your movies? Choose from 9 fan-favorite categories and challenge friends and family in Party Mode (up to 4 players).
- 15
Retro Racers 2
Single-player alternative to Spaceman Defender — playable solo, no multiplayer required. Shares Indie with Spaceman Defender.
Retro Racers 2 delivers top-down arcade racing with 12 tracks to unlock, four classic power-ups, and hazards that punish mistakes. Time gate openings for an edge, dodge sudden oil slicks, and race in smooth 60FPS HD.
- 16
Insectipede
Single-player alternative to Spaceman Defender — playable solo, no multiplayer required. Shares Action and Indie with Spaceman Defender.
Time to bug out and blast back in this arcade shooter packed with waves of insects and UFOs. Fight through 50 challenging stages, grab power-ups, and chase the high score.