Games like AlterSpace
Games like AlterSpace include No Man's Sky, Starfield, Fallout 4, Fallout: New Vegas, and Cyberpunk 2077. We matched them by the tags players give AlterSpace on Steam (Exploration, Sci-fi, RPG, Open World, and Adventure): closest matches first, and among equally close ones the better-known games.
No Man's Sky
Shared: Exploration · Open World · Sci-fi
Starfield
Shared: Open World · RPG · Sci-fi
Fallout 4
Shared: Exploration · Open World · RPG
Fallout: New Vegas
Shared: RPG · Open World · Exploration
Cyberpunk 2077
Shared: Open World · RPG · Sci-fi
S.T.A.L.K.E.R. 2: Heart of Chornobyl - Standard Edition
Shared: Open World · Exploration · Survival
Subnautica
Shared: Exploration · Open World · Survival
Rust
Shared: Open World · Survival · Crafting
Fallout 3
Shared: Open World · RPG · Exploration
Elite Dangerous
Shared: Exploration · Open World · Sci-fi
Enshrouded
Shared: Open World · RPG · Survival
The Forest
Shared: Open World · Survival · Adventure
The Long Dark
Shared: Exploration · Open World · Survival
STAR WARS Jedi: Fallen Order™
Shared: Open World · Sci-fi · Exploration
Dune: Awakening
Shared: Exploration · Survival · Adventure
Far Cry® Primal
Shared: Open World · Adventure · Survival
ASTRONEER
Shared: Open World · Exploration · Space
The Elder Scrolls IV: Oblivion Remastered
Shared: RPG · Open World · Exploration
Valheim
Shared: Open World · Survival · Exploration
STAR WARS Jedi: Survivor™
Shared: Open World · Sci-fi · Adventure
Outer Wilds
Shared: Exploration · Space · Adventure
Crimson Desert Enhanced
Shared: Exploration · Open World · Adventure
Far Cry® 5
Shared: Open World · Exploration · Action-Adventure
Assassin's Creed® Odyssey
Shared: Open World · RPG · Exploration