Games like Relay Protocol
Games like Relay Protocol include Portal, The Talos Principle 2, COCOON, It Takes Two, and Trine 3: The Artifacts of Power. We matched them by the tags players give Relay Protocol on Steam (Puzzle, Puzzle Platformer, Exploration, 3D Platformer, and Co-op Campaign): closest matches first, and among equally close ones the better-known games.
Portal
Shared: Puzzle · Puzzle Platformer · 3D Platformer
The Talos Principle 2
Shared: Puzzle · Puzzle Platformer · Exploration
COCOON
Shared: Puzzle · Exploration · Puzzle Platformer
It Takes Two
Shared: Puzzle · Co-op Campaign · Puzzle Platformer
Trine 3: The Artifacts of Power
Shared: Puzzle Platformer · 3D Platformer · Puzzle
Stray
Shared: Exploration · Puzzle · Third Person
Portal 2
Shared: Puzzle · Puzzle Platformer · 3D Platformer
ANIMAL WELL
Shared: Puzzle · Exploration · Puzzle Platformer
We Were Here Forever
Shared: Puzzle · Co-op Campaign · 3D
Big Walk
Shared: Puzzle · Exploration · Co-op Campaign
Monument Valley 2
Shared: Puzzle · Exploration · Puzzle Platformer
Rise of the Tomb Raider™
Shared: Exploration · Action · Third Person
We Were Here Together
Shared: Puzzle · Co-op Campaign · Exploration
LIMBO
Shared: Puzzle Platformer · Puzzle · Indie
Sonic Frontiers
Shared: 3D Platformer · Exploration · Action
Tomb Raider IV-VI Remastered
Shared: Puzzle · 3D Platformer · Action
Supraland
Shared: Puzzle Platformer · Exploration · Puzzle
Tomb Raider Game of the Year
Shared: Third Person · Action · Exploration
Öoo
Shared: Puzzle Platformer · Puzzle · Exploration
The Ball
Shared: Puzzle Platformer · Puzzle · 3D Platformer
Europa
Shared: Exploration · 3D Platformer · 3D
Kena: Bridge of Spirits
Shared: Exploration · 3D Platformer · Action
Moss: The Forgotten Relic
Shared: Exploration · Puzzle Platformer · Puzzle
Human Fall Flat
Shared: Puzzle · Puzzle Platformer · Action