Games like A Simple Expurriment
Games like A Simple Expurriment include ANIMAL WELL, Hollow Knight, Ori and the Will of the Wisps, Öoo, and Hollow Knight: Silksong. We matched them by the tags players give A Simple Expurriment on Steam (Metroidvania, Puzzle, Cats, Comedy, and Cartoony): closest matches first, and among equally close ones the better-known games.

ANIMAL WELL
Shared: Metroidvania · Puzzle · Puzzle Platformer

Hollow Knight
Shared: Metroidvania · Platformer · 2D

Ori and the Will of the Wisps
Shared: Metroidvania · Platformer · Puzzle

Öoo
Shared: Metroidvania · Puzzle · Puzzle Platformer

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

Gunpoint
Shared: Puzzle · Stealth · Comedy

Supraland
Shared: Metroidvania · Puzzle Platformer · Puzzle

Portal
Shared: Puzzle · Puzzle Platformer · Comedy

LIMBO
Shared: Puzzle · Puzzle Platformer · Platformer

Gato Roboto
Shared: Metroidvania · Cats · 2D

Portal 2
Shared: Puzzle · Platformer · Puzzle Platformer

Stray
Shared: Cats · Puzzle · Exploration

UnEpic
Shared: Metroidvania · Comedy · Platformer

Nine Sols
Shared: Metroidvania · 2D · Platformer

Teslagrad
Shared: Puzzle · Metroidvania · Platformer

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

BattleBlock Theater®
Shared: Comedy · Platformer · Cats

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

Reventure
Shared: Comedy · 2D · Platformer

FEZ
Shared: Puzzle · Platformer · Exploration

Human Fall Flat
Shared: Puzzle · Puzzle Platformer · Funny

Turnip Boy Commits Tax Evasion
Shared: Puzzle · Exploration · Comedy

La-Mulana
Shared: Metroidvania · Puzzle · Platformer

Pikuniku
Shared: Puzzle · Indie · Adventure