Games like ReThink 4
Games like ReThink 4 include Antichamber, Baba Is You, Poppy Playtime, The Room, and The Witness. We matched them by the tags players give ReThink 4 on Steam (Puzzle, First-Person, Logic, Indie, and 3D): closest matches first, and among equally close ones the better-known games.

Antichamber
Shared: Puzzle · First-Person · Indie

Baba Is You
Shared: Puzzle · Indie · Logic

Poppy Playtime
Shared: Puzzle · First-Person · Singleplayer

The Room
Shared: Puzzle · Singleplayer · Atmospheric

The Witness
Shared: Puzzle · First-Person · Singleplayer

Hexcells
Shared: Puzzle · Logic · Indie

Riven
Shared: Puzzle · First-Person · Singleplayer

Moncage
Shared: Puzzle · Indie · Singleplayer

Zup! S
Shared: Puzzle · Indie · Singleplayer

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

Garten of Banban
Shared: First-Person · Puzzle · Singleplayer

LYNE
Shared: Puzzle · Logic · Minimalist

COCOON
Shared: Puzzle · Indie · Atmospheric

Return of the Obra Dinn
Shared: Puzzle · Indie · First-Person

Hexcells Infinite
Shared: Puzzle · Logic · Indie

MiSide
Shared: First-Person · Singleplayer · 3D

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

Hook
Shared: Puzzle · Singleplayer · Indie

Blue Prince
Shared: Puzzle · First-Person · Singleplayer

Bendy and the Ink Machine
Shared: First-Person · Puzzle · Singleplayer

klocki
Shared: Puzzle · Logic · Singleplayer

Portal 2
Shared: Puzzle · First-Person · Singleplayer

Portal
Shared: Puzzle · First-Person · Singleplayer

Gorogoa
Shared: Puzzle · Indie · Singleplayer