Games like Reveal
Games like Reveal include Portal, Portal 2, A Story About My Uncle, Supraland, and The Room. We matched them by the tags players give Reveal on Steam (Adventure, Indie, Casual, Puzzle, and First-Person): closest matches first, and among equally close ones the better-known games.

Portal
Shared: Puzzle · First-Person · Puzzle Platformer

Portal 2
Shared: Puzzle · First-Person · Singleplayer

A Story About My Uncle
Shared: Adventure · Indie · First-Person

Supraland
Shared: Adventure · Puzzle Platformer · First-Person

The Room
Shared: Puzzle · Adventure · Indie

LIMBO
Shared: Indie · Puzzle · Puzzle Platformer

Refunct
Shared: 3D Platformer · First-Person · Casual

Viewfinder
Shared: Puzzle · First-Person · Puzzle Platformer

Moncage
Shared: Indie · Casual · Puzzle

The Last Campfire
Shared: Adventure · Puzzle · Indie

Gorogoa
Shared: Indie · Puzzle · Casual

Donut County
Shared: Indie · Casual · Puzzle

SUPERHOT
Shared: Indie · First-Person · Puzzle

There Is No Game: Wrong Dimension
Shared: Indie · Adventure · Puzzle

Little Nightmares
Shared: Adventure · Indie · Puzzle

Little Inferno
Shared: Indie · Casual · Puzzle

The Talos Principle
Shared: Puzzle · First-Person · Adventure

Polarity
Shared: Indie · Puzzle · Adventure

Nihilumbra
Shared: Adventure · Indie · Puzzle

Zup! 2
Shared: Indie · Casual · Puzzle

FEZ
Shared: Indie · Puzzle · Adventure

Shady Part of Me
Shared: Indie · Puzzle · Adventure

Poppy Playtime
Shared: Puzzle · First-Person · Singleplayer

FAR: Lone Sails
Shared: Adventure · Indie · Puzzle