Games like Wagon 00
Games like Wagon 00 include DISTRAINT: Deluxe Edition, OMORI, Papers, Please, OneShot, and Sally Face - Episode One. We matched them by the tags players give Wagon 00 on Steam (2D, Psychological Horror, Pixel Graphics, Colorful, and Atmospheric): closest matches first, and among equally close ones the better-known games.

DISTRAINT: Deluxe Edition
Shared: Psychological Horror · 2D · Pixel Graphics

OMORI
Shared: Psychological Horror · Pixel Graphics · Indie

Papers, Please
Shared: Pixel Graphics · Indie · Point & Click

OneShot
Shared: Pixel Graphics · Indie · Atmospheric

Sally Face - Episode One
Shared: Psychological Horror · Indie · Atmospheric

Rusty Lake Paradise
Shared: Psychological Horror · Indie · Atmospheric

There Is No Game: Wrong Dimension
Shared: Indie · Pixel Graphics · Adventure

Fran Bow
Shared: Psychological Horror · Indie · Point & Click

Endacopia
Shared: Psychological Horror · Pixel Graphics · Adventure

Chants of Sennaar
Shared: Colorful · Indie · Adventure

Firework
Shared: 2D · Psychological Horror · Indie

The Room Two
Shared: Atmospheric · Puzzle · Point & Click

The Room
Shared: Atmospheric · Puzzle · Point & Click

Mad Father
Shared: Psychological Horror · 2D · Pixel Graphics

Pony Island
Shared: Psychological Horror · Pixel Graphics · Indie

DAVE THE DIVER
Shared: Pixel Graphics · Casual · Adventure

FEZ
Shared: Pixel Graphics · Indie · Puzzle

Five Nights at Freddy's: Into the Pit
Shared: Pixel Graphics · 2D · Adventure

The Rewinder
Shared: Pixel Graphics · 2D · Adventure

Hyper Light Drifter
Shared: Pixel Graphics · Atmospheric · Indie

Servant of the Lake
Shared: Psychological Horror · Adventure · Indie

DISTRAINT 2
Shared: Psychological Horror · Atmospheric · 2D

The Room Three
Shared: Atmospheric · Indie · Adventure

The Witch's House MV
Shared: 2D · Pixel Graphics · Psychological Horror