Games like 30 Birds
Games like 30 Birds include Slime Rancher, Chants of Sennaar, Carto, Thank Goodness You're Here!, and GRIS. We matched them by the tags players give 30 Birds on Steam (Indie, Mythology, Electronic Music, Hand-drawn, and Lore-Rich): closest matches first, and among equally close ones the better-known games.

Slime Rancher
Shared: Exploration · Adventure · Open World

Chants of Sennaar
Shared: Indie · Adventure · Puzzle

Carto
Shared: Indie · Hand-drawn · Exploration

Thank Goodness You're Here!
Shared: Hand-drawn · Adventure · Indie

GRIS
Shared: Indie · Hand-drawn · Adventure

The Witness
Shared: Exploration · Indie · Puzzle

Hollow Knight: Silksong
Shared: Indie · Exploration · Adventure

鬼谷八荒 Tale of Immortal
Shared: Mythology · Singleplayer · Indie

Hollow Knight
Shared: Indie · Exploration · Adventure

Gorogoa
Shared: Indie · Hand-drawn · Puzzle

Assassin's Creed® Odyssey
Shared: Mythology · Open World · Exploration

Outer Wilds
Shared: Exploration · Adventure · Indie

Firewatch
Shared: Adventure · Indie · Exploration

Jotun: Valhalla Edition
Shared: Mythology · Indie · Adventure

There Is No Game: Wrong Dimension
Shared: Indie · Adventure · Puzzle

Deponia
Shared: Indie · Adventure · Funny

Murders on the Yangtze River
Shared: Indie · Adventure · Exploration

Stray
Shared: Adventure · Exploration · Singleplayer

AER Memories of Old
Shared: Indie · Exploration · Adventure

Milo and the Magpies
Shared: Hand-drawn · Adventure · Indie

Human Fall Flat
Shared: Funny · Adventure · Puzzle

FAR: Lone Sails
Shared: Indie · Adventure · Exploration

Antichamber
Shared: Indie · Exploration · Puzzle

Snufkin: Melody of Moominvalley
Shared: Funny · Indie · Puzzle