Single-player games like ReactorX
Below are 10 single-player Steam games similar to ReactorX, 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 ReactorX page.
Ranked picks
- 1

Reroute
Single-player alternative to ReactorX — playable solo, no multiplayer required.
Redirect lasers with the help of boxes and portals in this challenging puzzle game with unique mechanics.
- 2

Space Drone: Rescue Mission
Single-player alternative to ReactorX — playable solo, no multiplayer required. Shares Indie and Casual with ReactorX.
Space drone is a minimalist open world puzzle game with grid movement where you remotely control a drone to find and rescue your lost mates in space. Every movement spend energy, be aware to don't be without it!
- 3

Subject F-011
Single-player alternative to ReactorX — playable solo, no multiplayer required. Shares Indie and Casual with ReactorX.
Trapped in Area 51 on planet Earth, you must solve calculated puzzles to escape this strange planet. Puzzles consist of using enemies' mechanics to your advantage, moving objects to block enemies, and using items that alter parts of the rooms. A spiritual successor to Adventures of Lolo.
- 4

Space Voyage: The Puzzle Game
Single-player alternative to ReactorX — playable solo, no multiplayer required. Shares Indie and Casual with ReactorX.
Space Voyage is a one-of-a-kind puzzle adventure that plays like a dynamic board game, bringing mind-bending challenges and visually immersive gameplay. 🛰️Master the Controls, 🌀Bend Space & Time, 💎Collect & Conquer.
- 5

Unlock The King
Single-player alternative to ReactorX — playable solo, no multiplayer required. Shares Casual with ReactorX.
An originally designed puzzle game inspired by chess. Move the pieces and create a path to Unlock the King.
- 6

Unlock The King 3
Single-player alternative to ReactorX — playable solo, no multiplayer required. Shares Casual with ReactorX.
A new sequel of the successful Unlock The King, now with 3D boards based on Rubik's Cubes. An originally designed puzzle game inspired by chess. Move the pieces and create a path to Unlock the King.
- 7

Bot Patrol
Single-player alternative to ReactorX — playable solo, no multiplayer required. Shares Indie and Casual with ReactorX.
Guide your robot through hours of puzzling fun across three vibrant biomes, brimming with unique mechanics. Uncover the mystery behind missing colleague bots as you strive for freedom in this truly puzzling adventure.
- 8

Astro Loopers
Single-player alternative to ReactorX — playable solo, no multiplayer required. Shares Casual with ReactorX.
What if you could rewind time — and team up with your past self? Astro Loopers is a Sokoban-style puzzle game set in a cosmic universe, where every move echoes through time. Your past characters repeat their actions as time loops stack up — coordinate them to solve increasingly mind-bending stages.
- 9

Void Source
Single-player alternative to ReactorX — playable solo, no multiplayer required. Shares Indie with ReactorX.
Classic multi-directional (360°) shoot 'em up. Navigate your UFO through hazardous environments with dangerous enemies and beat huge bosses!
- 10

Ah, Love!
Single-player alternative to ReactorX — playable solo, no multiplayer required. Shares Indie and Casual with ReactorX.
Love, People, Date... - it's beautiful!!!