Games like Office 29
Games like Office 29 include Platform 8, What Remains of Edith Finch, The Exit 8, Firewatch, and SchoolBoy Runaway. We matched them by the tags players give Office 29 on Steam (Simulation, Adventure, Walking Simulator, Puzzle, and Life Sim): closest matches first, and among equally close ones the better-known games.

Platform 8
Shared: Adventure · Simulation · Walking Simulator

What Remains of Edith Finch
Shared: Walking Simulator · Adventure · Exploration

The Exit 8
Shared: Walking Simulator · Puzzle · Exploration

Firewatch
Shared: Adventure · Walking Simulator · Exploration

SchoolBoy Runaway
Shared: Adventure · Simulation · Puzzle

Scanner Sombre
Shared: Walking Simulator · Adventure · Exploration

Outer Wilds
Shared: Adventure · Exploration · Puzzle

Layers of Fear (2016)
Shared: Walking Simulator · Adventure · Psychological Horror

Poppy Playtime
Shared: Puzzle · First-Person · Horror

The Room Two
Shared: Puzzle · Adventure · Hidden Object

Inside the Backrooms
Shared: Puzzle · Adventure · Exploration

Killer Frequency
Shared: Adventure · Puzzle · Simulation

INFRA
Shared: Puzzle · Exploration · Walking Simulator

The Room Three
Shared: Adventure · Puzzle · Mystery

The Room
Shared: Puzzle · Adventure · Hidden Object

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

MOLE
Shared: Simulation · Adventure · Puzzle

Amnesia: A Machine For Pigs
Shared: Walking Simulator · Exploration · First-Person

Quern - Undying Thoughts
Shared: Adventure · Puzzle · Walking Simulator

The Witness
Shared: Puzzle · Exploration · First-Person

SOMA
Shared: Psychological Horror · Exploration · Horror

MiSide
Shared: Psychological Horror · First-Person · 3D

Garten of Banban
Shared: Puzzle · First-Person · Psychological Horror

Blue Prince
Shared: Puzzle · Exploration · Adventure