Games like Rectangles Odyssey
Games like Rectangles Odyssey include LIMBO, Celeste, Thomas Was Alone, Hollow Knight, and SANABI. We matched them by the tags players give Rectangles Odyssey on Steam (Adventure, Platformer, Side Scroller, Puzzle Platformer, and 2D Platformer): closest matches first, and among equally close ones the better-known games.

LIMBO
Shared: Puzzle Platformer · Platformer · Adventure

Celeste
Shared: Platformer · 2D Platformer · Indie

Thomas Was Alone
Shared: Platformer · Side Scroller · 2D Platformer

Hollow Knight
Shared: Platformer · 2D · Adventure

SANABI
Shared: Adventure · 2D Platformer · 2D

Mind Over Magnet
Shared: Adventure · Puzzle Platformer · Platformer

Mark of the Ninja
Shared: Platformer · Adventure · 2D

Braid
Shared: Puzzle Platformer · Platformer · 2D Platformer

Planet of Lana
Shared: Puzzle Platformer · 2D Platformer · Platformer

Max: The Curse of Brotherhood
Shared: Adventure · Platformer · Puzzle Platformer

INSIDE
Shared: Puzzle Platformer · Adventure · Indie

Super Meat Boy
Shared: Platformer · 2D Platformer · 2D

Hue
Shared: Adventure · Platformer · Puzzle Platformer

Anomaly Agent
Shared: Side Scroller · 2D Platformer · Platformer

Öoo
Shared: Puzzle Platformer · 2D Platformer · Platformer

Creepy Tale
Shared: Adventure · Puzzle Platformer · Platformer

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

Hollow Knight: Silksong
Shared: Platformer · 2D · Indie

Neva
Shared: Adventure · Platformer · Indie

ElecHead
Shared: Platformer · Puzzle Platformer · Adventure

Moonleap
Shared: Platformer · Puzzle Platformer · Minimalist

Shovel Knight: Treasure Trove
Shared: Platformer · Adventure · 2D

Songs for a Hero - Definitive Edition
Shared: Adventure · 2D Platformer · Platformer

Dust: An Elysian Tail
Shared: Platformer · Adventure · 2D