Games like Super Clown: Lost Diamonds
Games like Super Clown: Lost Diamonds include A Hat in Time, Portal 2, Chained Together, Psychonauts, and Celeste. We matched them by the tags players give Super Clown: Lost Diamonds on Steam (Adventure, Platformer, Walking Simulator, 3D Platformer, and Collectathon): closest matches first, and among equally close ones the better-known games.

A Hat in Time
Shared: 3D Platformer · Collectathon · Adventure

Portal 2
Shared: Platformer · Puzzle Platformer · 3D Platformer

Chained Together
Shared: Adventure · Platformer · 3D Platformer

Psychonauts
Shared: Platformer · Adventure · 3D Platformer

Celeste
Shared: Platformer · Precision Platformer · Adventure

Yooka-Laylee
Shared: Adventure · 3D Platformer · Platformer

Sonic Frontiers
Shared: Adventure · 3D Platformer · Platformer

SpongeBob SquarePants: Titans of the Tide
Shared: Adventure · Platformer · 3D Platformer

Firewatch
Shared: Adventure · Walking Simulator · Story Rich

Spyro™ Reignited Trilogy
Shared: Adventure · 3D Platformer · Platformer

TY the Tasmanian Tiger
Shared: Platformer · 3D Platformer · Adventure

Sonic Adventure DX
Shared: Platformer · Adventure · 3D Platformer

Kao the Kangaroo: Round 2 (2003 re-release)
Shared: Adventure · 3D Platformer · Platformer

LIMBO
Shared: Platformer · Puzzle Platformer · Adventure

Pumpkin Jack
Shared: Adventure · 3D Platformer · Collectathon

Psychonauts 2
Shared: 3D Platformer · Adventure · Platformer

Supraland
Shared: Adventure · Puzzle Platformer · 3D Platformer

The Plucky Squire
Shared: Adventure · 3D Platformer · Puzzle Platformer

Toree 3D
Shared: Platformer · 3D Platformer · 3D

Little Nightmares
Shared: Adventure · Puzzle Platformer · Platformer

Get To Work
Shared: Adventure · 3D Platformer · Platformer

Ratchet & Clank: Rift Apart
Shared: Adventure · 3D Platformer · Platformer

The Last Campfire
Shared: Adventure · Cute · 3D Platformer

Papo & Yo
Shared: Adventure · 3D Platformer · Platformer