Games like Unforgiving Happiness
Games like Unforgiving Happiness include GRIS, FEZ, Portal 2, Assemble with Care, and Braid. We matched them by the tags players give Unforgiving Happiness on Steam (Indie, Casual, Platformer, Relaxing, and Puzzle): closest matches first, and among equally close ones the better-known games.

GRIS
Shared: Indie · Great Soundtrack · Platformer

FEZ
Shared: Indie · Platformer · Puzzle

Portal 2
Shared: Platformer · Puzzle · Singleplayer

Assemble with Care
Shared: Indie · Casual · Relaxing

Braid
Shared: Indie · Puzzle · Platformer

Unpacking
Shared: Casual · Relaxing · Puzzle

LIMBO
Shared: Indie · Platformer · Puzzle

Hollow Knight
Shared: Platformer · Indie · Great Soundtrack

Nihilumbra
Shared: Indie · Platformer · Casual

Zup! S
Shared: Casual · Indie · Puzzle

Mini Motorways
Shared: Casual · Indie · Puzzle

Hexcells
Shared: Casual · Indie · Puzzle

Defy Gravity Extended
Shared: Indie · Platformer · Puzzle

Seen
Shared: Indie · Puzzle · Platformer

OneShot
Shared: Indie · Story Rich · Great Soundtrack

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

Glass Masquerade
Shared: Casual · Indie · Relaxing

Pinstripe
Shared: Indie · Casual · Platformer

Hue
Shared: Indie · Puzzle · Platformer

Refunct
Shared: Relaxing · Casual · Platformer

Donut County
Shared: Indie · Casual · Puzzle

Never Alone (Kisima Ingitchuna)
Shared: Indie · Platformer · Story Rich

Celeste
Shared: Indie · Platformer · Great Soundtrack

Hollow Knight: Silksong
Shared: Indie · Great Soundtrack · Platformer