Games like OddPlanet
Games like OddPlanet include LIMBO, GRIS, Hollow Knight, Deadlight, and Neva. We matched them by the tags players give OddPlanet on Steam (Adventure, Indie, Platformer, Side Scroller, and Atmospheric): closest matches first, and among equally close ones the better-known games.

LIMBO
Shared: Indie · Platformer · Adventure

GRIS
Shared: Indie · Atmospheric · Adventure

Hollow Knight
Shared: Platformer · Indie · Adventure

Deadlight
Shared: Platformer · Indie · Adventure

Neva
Shared: Adventure · Platformer · Indie

Never Alone (Kisima Ingitchuna)
Shared: Indie · Platformer · Adventure

Mark of the Ninja
Shared: Platformer · Indie · Adventure

Seen
Shared: Indie · Adventure · Atmospheric

Little Nightmares
Shared: Adventure · Atmospheric · Indie

Hollow Knight: Silksong
Shared: Indie · Platformer · Adventure

Rain World
Shared: Indie · Atmospheric · Platformer

Brothers - A Tale of Two Sons
Shared: Adventure · Indie · Atmospheric

A Story About My Uncle
Shared: Adventure · Indie · Platformer

Unbound: Worlds Apart
Shared: Adventure · Indie · Platformer

Pinstripe
Shared: Adventure · Indie · Atmospheric

FAR: Lone Sails
Shared: Adventure · Atmospheric · Indie

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

MO:Astray
Shared: Indie · Adventure · Platformer

Nihilumbra
Shared: Adventure · Indie · Platformer

Shovel Knight: Treasure Trove
Shared: Platformer · Indie · Adventure

Firewatch
Shared: Adventure · Atmospheric · Indie

BADLAND: Game of the Year Edition
Shared: Adventure · Indie · Platformer

Journey
Shared: Adventure · Indie · Atmospheric

Celeste
Shared: Indie · Platformer · Adventure