Games like ecotone
Games like ecotone include LIMBO, Seen, Little Nightmares, Planet of Lana, and Hollow Knight. We matched them by the tags players give ecotone on Steam (Adventure, Indie, Action, Platformer, and Puzzle Platformer): closest matches first, and among equally close ones the better-known games.

LIMBO
Shared: Indie · Puzzle Platformer · Platformer

Seen
Shared: Indie · Adventure · Singleplayer

Little Nightmares
Shared: Adventure · Atmospheric · Puzzle Platformer

Planet of Lana
Shared: Action · Puzzle Platformer · Atmospheric

Hollow Knight
Shared: Platformer · Indie · Adventure

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

MO:Astray
Shared: Indie · Adventure · Action

GRIS
Shared: Indie · Adventure · Atmospheric

INSIDE
Shared: Puzzle Platformer · Atmospheric · Indie

FAR: Lone Sails
Shared: Adventure · Atmospheric · Indie

Deadlight
Shared: Action · Indie · Platformer

Hollow Knight: Silksong
Shared: Indie · Platformer · Adventure

Portal 2
Shared: Platformer · Singleplayer · Puzzle Platformer

Dust: An Elysian Tail
Shared: Action · Indie · Platformer

Little Nightmares II
Shared: Adventure · Singleplayer · Atmospheric

Hob
Shared: Adventure · Action · Indie

Neva
Shared: Adventure · Indie · Platformer

Oddworld: New 'n' Tasty
Shared: Adventure · Platformer · Puzzle Platformer

Tomb Raider Game of the Year
Shared: Adventure · Action · Singleplayer

Unravel
Shared: Adventure · Action · Singleplayer

Mark of the Ninja
Shared: Indie · Platformer · Action

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

Nihilumbra
Shared: Adventure · Indie · Platformer

Pumpkin Jack
Shared: Adventure · Action · Indie