Games like Monoquous 2
Games like Monoquous 2 include LIMBO, Braid, Planet of Lana, Trine 2: Complete Story, and Defy Gravity Extended. We matched them by the tags players give Monoquous 2 on Steam (Casual, Platformer, Puzzle, 2D Platformer, and Collectathon): closest matches first, and among equally close ones the better-known games.

LIMBO
Shared: Puzzle · Platformer · Puzzle Platformer

Braid
Shared: Puzzle · 2D Platformer · Platformer

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

Trine 2: Complete Story
Shared: Platformer · Puzzle Platformer · 2D Platformer

Defy Gravity Extended
Shared: Platformer · Puzzle · Puzzle Platformer

FEZ
Shared: Platformer · Puzzle · Casual

GRIS
Shared: Platformer · Atmospheric · Indie

Munin
Shared: Casual · Puzzle · Platformer

Laughing to Die
Shared: Casual · Puzzle · Platformer

Portal 2
Shared: Platformer · Puzzle · Puzzle Platformer

Creaks
Shared: Puzzle · Puzzle Platformer · 2D

Neva
Shared: Platformer · Puzzle · Atmospheric

Nihilumbra
Shared: Platformer · Casual · Puzzle

Zup! F
Shared: Casual · Puzzle · 2D

Golf Club Nostalgia
Shared: 2D Platformer · Casual · Puzzle Platformer

The Pedestrian
Shared: Puzzle · Platformer · Puzzle Platformer

Zup!
Shared: Casual · Puzzle · 2D

ANIMAL WELL
Shared: Puzzle · Platformer · Puzzle Platformer

Öoo
Shared: Puzzle · 2D Platformer · Puzzle Platformer

Zup! S
Shared: Casual · Puzzle · 2D

Zup! 2
Shared: Casual · Puzzle · 2D

INSIDE
Shared: Puzzle Platformer · Atmospheric · Puzzle

Celeste
Shared: Platformer · 2D Platformer · 2D

Zup! X
Shared: Casual · Puzzle · 2D