Games like The Guest
Games like The Guest include Firewatch, What Remains of Edith Finch, Poppy Playtime, The Room, and The Room Two. We matched them by the tags players give The Guest on Steam (Puzzle, Indie, Adventure, Horror, and Mystery): closest matches first, and among equally close ones the better-known games.

Firewatch
Shared: Adventure · Atmospheric · Mystery

What Remains of Edith Finch
Shared: Atmospheric · Mystery · Adventure

Poppy Playtime
Shared: Puzzle · Horror · First-Person

The Room
Shared: Puzzle · Mystery · Adventure

The Room Two
Shared: Puzzle · Mystery · Horror

Layers of Fear (2016)
Shared: Horror · Atmospheric · Indie

Outer Wilds
Shared: Adventure · Mystery · Puzzle

The Room Three
Shared: Puzzle · Adventure · Indie

INFRA
Shared: Puzzle · Adventure · Atmospheric

Firework
Shared: Indie · Puzzle · Horror

Sally Face - Episode One
Shared: Indie · Puzzle · Horror

Amnesia: A Machine For Pigs
Shared: Horror · Atmospheric · Walking Simulator

Little Nightmares
Shared: Horror · Adventure · Atmospheric

Samsara Room
Shared: Puzzle · Indie · Adventure

Inside the Backrooms
Shared: Puzzle · Horror · Adventure

Rusty Lake Paradise
Shared: Puzzle · Indie · Adventure

Little Nightmares II
Shared: Adventure · Puzzle · Horror

The Witness
Shared: Puzzle · Indie · First-Person

Among the Sleep - Enhanced Edition
Shared: Indie · Horror · Adventure

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

SOMA
Shared: Horror · Atmospheric · Psychological Horror

Homesick
Shared: Puzzle · Indie · Atmospheric

Stray
Shared: Adventure · Atmospheric · Puzzle

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