Games like Space Pilgrim Episode I: Alpha Centauri
Games like Space Pilgrim Episode I: Alpha Centauri include There Is No Game: Wrong Dimension, Broken Age, Outer Wilds, GRIS, and Florence. We matched them by the tags players give Space Pilgrim Episode I: Alpha Centauri on Steam (Adventure, Space, Sci-fi, Indie, and Female Protagonist): closest matches first, and among equally close ones the better-known games.

There Is No Game: Wrong Dimension
Shared: Adventure · Indie · Point & Click

Broken Age
Shared: Adventure · Indie · Story Rich

Outer Wilds
Shared: Space · Adventure · Story Rich

GRIS
Shared: Adventure · Indie · Female Protagonist

Florence
Shared: Adventure · Indie · Casual

Deliver Us The Moon
Shared: Adventure · Space · Indie

Observation
Shared: Adventure · Space · Indie

To the Moon
Shared: Indie · Adventure · Story Rich

Space Pilgrim Episode II: Epsilon Indi
Shared: Adventure · Space · Indie

Finding Paradise
Shared: Adventure · Story Rich · 2D

Starfield
Shared: Space · Sci-fi · Adventure

Tales from the Borderlands
Shared: Adventure · Story Rich · Comedy

The Turing Test
Shared: Sci-fi · Space · Adventure

Firewatch
Shared: Adventure · Story Rich · Indie

Impostor Factory
Shared: Adventure · Story Rich · 2D

Tacoma
Shared: Adventure · Sci-fi · Space

OneShot
Shared: Indie · Story Rich · Adventure

Tales of the Black Forest
Shared: Adventure · Indie · Story Rich

Deponia
Shared: Adventure · Point & Click · Indie

Space Pilgrim Episode III: Delta Pavonis
Shared: Adventure · Space · Indie

Space Pilgrim Episode IV: Sol
Shared: Adventure · Space · Indie

Little Misfortune
Shared: Indie · Adventure · Story Rich

Hollow Knight: Silksong
Shared: Indie · Adventure · Female Protagonist

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