Single-player games like Space Codex
Below are 8 single-player Steam games similar to Space Codex, 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 Codex page.
Ranked picks
- 1
Geometry Wars: Retro Evolved
Single-player alternative to Space Codex — playable solo, no multiplayer required. Shares Casual with Space Codex.
Geometry Wars: Retro Evolved is a old school style shooter, but remixed for the 21st century with next generation graphics and deep, modern gameplay. Playing is simple: you are a geometric "ship" trapped in a grid world, facing off against waves of deadly wanderers, snakes, and repulsars.
- 2
Bit Blaster XL
Single-player alternative to Space Codex — playable solo, no multiplayer required. Shares Casual with Space Codex.
Bit Blaster XL is a fast-paced, retro arcade shoot 'em up (shmup) inspired by the classic quarter-munchers of the ‘80s. Easy to pick up, hard to put down, boost, dodge, shoot, and chase high scores in this addictive, old-school action game!
- 3
Beat Invaders
Single-player alternative to Space Codex — playable solo, no multiplayer required. Shares Casual with Space Codex.
Beat Invaders is a Vertical Shoot 'Em Up Roguelite - Fight your way through enemy fleets, unlock skills, items, ships, and upgrade them in the next run. Enjoy the smooth neon visuals matching the pushing EDM soundtrack - The perfect game to unwind.
- 4
Sun Blast: Star Fighter
Single-player alternative to Space Codex — playable solo, no multiplayer required.
Sun Blast is the best 3d space shooter on Steam. Earn upgrades as you fight your way through a huge seleciton of levels. Full gamepad support!
- 5
Earthion
Single-player alternative to Space Codex — playable solo, no multiplayer required.
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.
- 6
Distant Space
Single-player alternative to Space Codex — playable solo, no multiplayer required. Shares Casual with Space Codex.
Distant Space are present the arcade game of cosmic fights in arcade style of the 80's, this is a game where you can control the spaceship and forced to destroy extraterrestrials, which are moving in the certain order.
- 7
Hell is Other Demons
Single-player alternative to Space Codex — playable solo, no multiplayer required.
Hell is Other Demons is an action-platform shooter, with Roguelite elements. Explore a sprawling, hand-crafted world full of demons, insanely over-the-top boss fights, and a heavy synthwave soundtrack.
- 8
Syder Arcade
Single-player alternative to Space Codex — playable solo, no multiplayer required.
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.