Games like Puzzle Park
Games like Puzzle Park include The Witness, Slime Rancher, Fallout 4, Big Walk, and Antichamber. We matched them by the tags players give Puzzle Park on Steam (Puzzle, Exploration, First-Person, Open World, and Singleplayer): closest matches first, and among equally close ones the better-known games.

The Witness
Shared: Puzzle · Exploration · First-Person

Slime Rancher
Shared: Exploration · Open World · Singleplayer

Fallout 4
Shared: Open World · Exploration · Singleplayer

Big Walk
Shared: Puzzle · Exploration · Open World

Antichamber
Shared: Puzzle · First-Person · Exploration

Outer Wilds
Shared: Exploration · Puzzle · Adventure

Firewatch
Shared: Adventure · First-Person · Exploration

The Long Dark
Shared: Exploration · Open World · First-Person

Slime Rancher 2
Shared: Open World · Singleplayer · First-Person

Stray
Shared: Exploration · Adventure · Singleplayer

Chants of Sennaar
Shared: Puzzle · Singleplayer · Adventure

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

Blue Prince
Shared: Puzzle · Exploration · Singleplayer

Fallout: New Vegas
Shared: Open World · Singleplayer · Exploration

Eastshade
Shared: Exploration · Open World · Adventure

Riven
Shared: Puzzle · Exploration · First-Person

No Man's Sky
Shared: Open World · Exploration · First-Person

RiME
Shared: Puzzle · Exploration · Adventure

Rise of the Tomb Raider™
Shared: Adventure · Singleplayer · Exploration

S.T.A.L.K.E.R. 2: Heart of Chornobyl - Standard Edition
Shared: Open World · Exploration · Singleplayer

AER Memories of Old
Shared: Exploration · Adventure · Open World

Supraland
Shared: Exploration · First-Person · Puzzle

Islands of Insight
Shared: Puzzle · Exploration · Open World

Indiana Jones and the Great Circle
Shared: First-Person · Puzzle · Exploration