Games like Starseed Pilgrim
Games like Starseed Pilgrim include LIMBO, Hollow Knight, Hollow Knight: Silksong, Antichamber, and FEZ. We matched them by the tags players give Starseed Pilgrim on Steam (Indie, Adventure, Puzzle, Minimalist, and Exploration): closest matches first, and among equally close ones the better-known games.

LIMBO
Shared: Indie · Puzzle · Puzzle Platformer

Hollow Knight
Shared: Indie · Platformer · Difficult

Hollow Knight: Silksong
Shared: Indie · Difficult · Exploration

Antichamber
Shared: Indie · Puzzle · Exploration

FEZ
Shared: Indie · Puzzle · Platformer

FAR: Lone Sails
Shared: Adventure · Indie · Atmospheric

ANIMAL WELL
Shared: Puzzle · Exploration · Puzzle Platformer

Rain World
Shared: Indie · Exploration · Atmospheric

Little Nightmares
Shared: Adventure · Atmospheric · Indie

GRIS
Shared: Indie · Adventure · Atmospheric

COCOON
Shared: Adventure · Puzzle · Indie

INSIDE
Shared: Puzzle Platformer · Indie · Atmospheric

NaissanceE
Shared: Indie · Exploration · Adventure

Stray
Shared: Adventure · Atmospheric · Exploration

Chants of Sennaar
Shared: Adventure · Puzzle · Indie

Nihilumbra
Shared: Indie · Adventure · Puzzle

Ori and the Will of the Wisps
Shared: Adventure · Platformer · Atmospheric

Viewfinder
Shared: Puzzle · Puzzle Platformer · Adventure

Seen
Shared: Indie · Adventure · Puzzle

Neva
Shared: Adventure · Indie · Atmospheric

The Witness
Shared: Puzzle · Exploration · Indie

Little Nightmares II
Shared: Adventure · Puzzle · Atmospheric

Celeste
Shared: Indie · Difficult · Platformer

Outer Wilds
Shared: Exploration · Adventure · Puzzle