Games like The Black Watchmen
Games like The Black Watchmen include Firework, The Room Two, Sally Face - Episode One, Poppy Playtime, and The Room Three. We matched them by the tags players give The Black Watchmen on Steam (Puzzle, Indie, RPG, Horror, and Adventure): closest matches first, and among equally close ones the better-known games.

Firework
Shared: Indie · Puzzle · Horror

The Room Two
Shared: Puzzle · Mystery · Horror

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

Poppy Playtime
Shared: Puzzle · Horror · Indie

The Room Three
Shared: Puzzle · Indie · Adventure

Little Nightmares
Shared: Horror · Adventure · Puzzle

The Room
Shared: Puzzle · Mystery · Indie

Little Nightmares II
Shared: Puzzle · Horror · Adventure

Rusty Lake Paradise
Shared: Puzzle · Indie · Adventure

Tales of the Black Forest
Shared: RPG · Indie · Horror

Return of the Obra Dinn
Shared: Puzzle · Indie · Mystery

The White Door
Shared: Indie · Puzzle · Adventure

Cube Escape Collection
Shared: Puzzle · Horror · Mystery

Cyber Manhunt
Shared: Puzzle · RPG · Indie

Detention
Shared: Indie · Horror · Puzzle

Inside the Backrooms
Shared: Puzzle · Horror · Adventure

Sanfu
Shared: Puzzle · RPG · Mystery

Outer Wilds
Shared: Puzzle · Adventure · Mystery

Fran Bow
Shared: Puzzle · Horror · Indie

Servant of the Lake
Shared: Puzzle · Adventure · Indie

Samsara Room
Shared: Puzzle · Indie · Adventure

Amnesia: The Dark Descent
Shared: Horror · Puzzle · Psychological Horror

Observation
Shared: Indie · Adventure · Puzzle

OMORI
Shared: Indie · RPG · Psychological Horror