Games like 2100
Games like 2100 include Deliver Us The Moon, Half-Life 2, No Man's Sky, STAR WARS Jedi: Survivor™, and Black Mesa. We matched them by the tags players give 2100 on Steam (Action, Adventure, Indie, Space, and First-Person): closest matches first, and among equally close ones the better-known games.
Deliver Us The Moon
Shared: Adventure · Action · Indie
Half-Life 2
Shared: Action · Sci-fi · Adventure
No Man's Sky
Shared: Space · Sci-fi · Adventure
STAR WARS Jedi: Survivor™
Shared: Action · Adventure · Singleplayer
Black Mesa
Shared: Action · First-Person · Sci-fi
BioShock Infinite
Shared: Action · First-Person · Adventure
Starfield
Shared: Space · Singleplayer · Sci-fi
Breathedge
Shared: Space · Indie · Singleplayer
Warhammer 40,000: Space Marine 2
Shared: Action · Adventure · Sci-fi
Outer Wilds
Shared: Space · Adventure · Indie
Chorus
Shared: Action · Adventure · Indie
Grand Theft Auto V Legacy
Shared: Action · Adventure · First-Person
STAR WARS™ Battlefront™ II
Shared: Space · Action · Singleplayer
Halo Infinite
Shared: Action · Singleplayer · First-Person
Q.U.B.E. 2
Shared: Action · Adventure · Indie
Valley
Shared: Adventure · First-Person · Action
Trailmakers
Shared: Action · Space · Adventure
Bendy and the Dark Revival
Shared: Action · First-Person · Adventure
Bright Memory: Infinite
Shared: Action · Indie · Singleplayer
Five Nights at Freddy's: Secret of the Mimic
Shared: Adventure · Action · First-Person
Five Nights at Freddy's: Security Breach
Shared: Singleplayer · First-Person · Adventure
STAR WARS™ Battlefront II (Classic, 2005)
Shared: Action · Space · Sci-fi
Q.U.B.E: Director's Cut
Shared: Indie · Adventure · Action
PRAGMATA
Shared: Action · Adventure · Sci-fi