Games like Relic Space
Games like Relic Space include Caves of Qud, No Man's Sky, Starfield, Fallout: New Vegas, and Fallout 4. We matched them by the tags players give Relic Space on Steam (Tactical RPG, Space, Grid-Based Movement, Open World, and Transhumanism): closest matches first, and among equally close ones the better-known games.
Caves of Qud
Shared: Open World · Procedural Generation · Transhumanism
No Man's Sky
Shared: Space · Open World · Procedural Generation
Starfield
Shared: Space · Open World · Story Rich
Fallout: New Vegas
Shared: Open World · Post-apocalyptic · Story Rich
Fallout 4
Shared: Open World · Post-apocalyptic · Story Rich
FTL: Faster Than Light
Shared: Space · Roguelike · Sci-fi
The Witcher 3: Wild Hunt — Remastered
Shared: Open World · Story Rich · RPG
Outer Wilds
Shared: Space · Story Rich · Open World
STAR WARS Jedi: Fallen Order™
Shared: Open World · Story Rich · Space
Cyberpunk 2077
Shared: Open World · Story Rich · RPG
STAR WARS Jedi: Survivor™
Shared: Open World · Space · Story Rich
S.T.A.L.K.E.R. 2: Heart of Chornobyl - Standard Edition
Shared: Open World · Post-apocalyptic · Story Rich
Fallout 2: A Post Nuclear Role Playing Game
Shared: Open World · Post-apocalyptic · RPG
Elite Dangerous
Shared: Space · Open World · Sci-fi
Heat Signature
Shared: Space · Roguelike · Procedural Generation
Fallout Tactics: Brotherhood of Steel
Shared: Tactical · Post-apocalyptic · Tactical RPG
Fallout: A Post Nuclear Role Playing Game
Shared: Open World · Post-apocalyptic · RPG
Wuthering Waves
Shared: Open World · Story Rich · RPG
Wasteland 3
Shared: Tactical RPG · Story Rich · Post-apocalyptic
The Banner Saga
Shared: Tactical RPG · Turn-Based · Story Rich
Space Rangers HD: A War Apart
Shared: Space · Open World · RPG
Wandering Sword
Shared: Open World · Story Rich · RPG
LEGO® Star Wars™: The Skywalker Saga
Shared: Space · Open World · Sci-fi
Crying Suns
Shared: Space · Tactical · Roguelike