Games like Star Trek™ : 25th Anniversary
Games like Star Trek™ : 25th Anniversary include Half-Life 2, STAR WARS Jedi: Survivor™, STAR WARS™ Knights of the Old Republic™, SPORE™ Galactic Adventures, and Space Rangers HD: A War Apart. We matched them by the tags players give Star Trek™ : 25th Anniversary on Steam (Adventure, Sci-fi, Point & Click, Simulation, and Classic): closest matches first, and among equally close ones the better-known games.

Half-Life 2
Shared: Sci-fi · Action · Classic

STAR WARS Jedi: Survivor™
Shared: Adventure · Action · Sci-fi

STAR WARS™ Knights of the Old Republic™
Shared: Sci-fi · Adventure · Classic

SPORE™ Galactic Adventures
Shared: Adventure · Simulation · Action

Space Rangers HD: A War Apart
Shared: Adventure · Space · Simulation

Elite Dangerous
Shared: Sci-fi · Space · Simulation

Half-Life: Opposing Force
Shared: Sci-fi · Classic · Action

Half-Life
Shared: Sci-fi · Classic · Singleplayer

Deliver Us The Moon
Shared: Adventure · Sci-fi · Action

STAR WARS™ Battlefront II (Classic, 2005)
Shared: Action · Sci-fi · Classic

Black Mesa
Shared: Sci-fi · Action · Singleplayer

Half-Life: Blue Shift
Shared: Sci-fi · Action · Classic

No Man's Sky
Shared: Sci-fi · Space · Adventure

Endless Sky
Shared: Sci-fi · Space · Adventure

Warhammer 40,000: Space Marine 2
Shared: Adventure · Action · Sci-fi

X Rebirth
Shared: Sci-fi · Simulation · Space

LEGO® Star Wars™: The Skywalker Saga
Shared: Adventure · Sci-fi · Space

STAR WARS™: Squadrons
Shared: Sci-fi · Space · Simulation

Rebel Galaxy
Shared: Sci-fi · Adventure · Space

The Longest Journey
Shared: Adventure · Point & Click · Sci-fi

STAR WARS™ Knights of the Old Republic™ II - The Sith Lords™
Shared: Sci-fi · Adventure · Classic

PRAGMATA
Shared: Sci-fi · Adventure · Action

STAR WARS™ Empire at War - Gold Pack
Shared: Sci-fi · Space · Singleplayer

Starfield
Shared: Sci-fi · Space · Singleplayer