Single-player games like Slordax: The Unknown Enemy
Below are 10 single-player Steam games similar to Slordax: The Unknown Enemy, 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 Slordax: The Unknown Enemy page.
Ranked picks
- 1
Retro Classix: SRD - Super Real Darwin
Single-player alternative to Slordax: The Unknown Enemy — playable solo, no multiplayer required. Shares Action with Slordax: The Unknown Enemy.
Super Real Darwin is a fast-paced, vertical scrolling shoot-em-up that rewards skill and persistence – a cult classic for the retro shmup fan. Take control of a fighter ship capable of mutating into different shapes as it evolves while fighting off enemy invaders.
- 2
Space Defense
Single-player alternative to Slordax: The Unknown Enemy — playable solo, no multiplayer required. Shares Action with Slordax: The Unknown Enemy.
You and your space troop have a tough mission to defend Earth from an alien invasion in this epic space war. Will you be able to guide your troops to victory?
- 3
REVO
Single-player alternative to Slordax: The Unknown Enemy — playable solo, no multiplayer required. Shares Action with Slordax: The Unknown Enemy.
Dodge and shoot your way through waves of enemies. REVO is a high speed, neon drenched space shoot ‘em up inspired by arcade classics of the 1980’s. Collect pickups, unlock powerful, ammo hungry weapons, and defeat giant bosses.
- 4
Mission: Clear Space
Single-player alternative to Slordax: The Unknown Enemy — playable solo, no multiplayer required. Shares Action with Slordax: The Unknown Enemy.
A space shooting and navigation game
- 5
Solaris - Arcade Edition
Single-player alternative to Slordax: The Unknown Enemy — playable solo, no multiplayer required. Shares Action with Slordax: The Unknown Enemy.
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".
- 6
Timeloop Titans
Single-player alternative to Slordax: The Unknown Enemy — playable solo, no multiplayer required. Shares Action with Slordax: The Unknown Enemy.
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!
- 7
Blast Rush LS
Single-player alternative to Slordax: The Unknown Enemy — playable solo, no multiplayer required. Shares Action with Slordax: The Unknown Enemy.
Ever played a difficult shmup wishing for just one more bomb? Blast to your heart’s content in Blast Rush LS, a fresh explosive experience with infinite bombs, other powerful abilities, and extra challenges that demand more than just big booms. Escaping an exploding mothership isn't easy, after all!
- 8
Space War: Infinity
Single-player alternative to Slordax: The Unknown Enemy — playable solo, no multiplayer required. Shares Action with Slordax: The Unknown Enemy.
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.
- 9
Rescue Rover Collection
Single-player alternative to Slordax: The Unknown Enemy — playable solo, no multiplayer required. Shares Action with Slordax: The Unknown Enemy.
This classic pair of whimsical and challenging grid-based action puzzle games are now available together in one package! Rescue your dog Rover from evil robots across two full games by solving fiendishly complex environmental puzzles to retrieve your beloved pup and make it safely back home.
- 10
ScubaVenture: The Search for Pirate's Treasure
Single-player alternative to Slordax: The Unknown Enemy — playable solo, no multiplayer required. Shares Action with Slordax: The Unknown Enemy.
Scour the wreckage of a pirate ship in this colorful 2D side scrolling underwater action adventure! Fight off all manner of sea creatures and rival divers with your harpoon gun and bombs as you gather treasure but beware of ghastly pirate ghosts seeking to reclaim what was once theirs!