Games like 20 Trials to Heaven
Games like 20 Trials to Heaven include The Room, The Room Three, The Room Two, Baba Is You, and Samsara Room. We matched them by the tags players give 20 Trials to Heaven on Steam (Puzzle, Difficult, Pixel Graphics, Mystery, and Atmospheric): closest matches first, and among equally close ones the better-known games.

The Room
Shared: Puzzle · Mystery · Atmospheric

The Room Three
Shared: Puzzle · Mystery · Adventure

The Room Two
Shared: Puzzle · Mystery · Atmospheric

Baba Is You
Shared: Puzzle · Difficult · Pixel Graphics

Samsara Room
Shared: Puzzle · Adventure · Escape Room

LIMBO
Shared: Puzzle · Atmospheric · Adventure

The Rewinder
Shared: Puzzle · Pixel Graphics · Mystery

Return of the Obra Dinn
Shared: Puzzle · Mystery · Atmospheric

We Were Here
Shared: Puzzle · Escape Room · Mystery

Servant of the Lake
Shared: Puzzle · Adventure · Escape Room

Hyper Light Drifter
Shared: Pixel Graphics · Atmospheric · Difficult

Poppy Playtime
Shared: Puzzle · Mystery · Dark

Rain World
Shared: Difficult · Atmospheric · Pixel Graphics

The Room 4: Old Sins
Shared: Puzzle · Mystery · Adventure

Void Stranger
Shared: Puzzle · Mystery · Adventure

Strange Horticulture
Shared: Puzzle · Mystery · Atmospheric

OneShot
Shared: Pixel Graphics · Puzzle · Atmospheric

Sally Face - Episode One
Shared: Puzzle · Mystery · Adventure

ANIMAL WELL
Shared: Puzzle · Pixel Graphics · Atmospheric

Outer Wilds
Shared: Mystery · Puzzle · Adventure

Cube Escape Collection
Shared: Puzzle · Mystery · Escape Room

Titan Souls
Shared: Difficult · Pixel Graphics · Adventure

Rusty Lake Paradise
Shared: Puzzle · Adventure · Atmospheric

The Witness
Shared: Puzzle · Difficult · Atmospheric