Games like The Observatory Incident
Games like The Observatory Incident include Touhou Mystia's Izakaya, Papers, Please, DAVE THE DIVER, Vampire Survivors, and The Test. We matched them by the tags players give The Observatory Incident on Steam (Casual, Simulation, Psychological, Singleplayer, and Time Management): closest matches first, and among equally close ones the better-known games.

Touhou Mystia's Izakaya
Shared: Casual · Simulation · Pixel Graphics

Papers, Please
Shared: Simulation · Singleplayer · Pixel Graphics

DAVE THE DIVER
Shared: Casual · Pixel Graphics · Singleplayer

Vampire Survivors
Shared: Singleplayer · Pixel Graphics · Casual

The Test
Shared: Simulation · Psychological · Singleplayer

Shelldiver
Shared: Casual · Arcade · Simulation

Papa's Freezeria Deluxe
Shared: Simulation · Casual · Time Management

Shower With Your Dad Simulator 2015: Do You Still Shower With Your Dad
Shared: Casual · Arcade · 2D

Dome Keeper
Shared: Singleplayer · Pixel Graphics · Simulation

Game Dev Tycoon
Shared: Simulation · Casual · Singleplayer

Nodebuster
Shared: Casual · Simulation · Arcade

Unpacking
Shared: Casual · Simulation · Singleplayer

To The Core
Shared: Casual · Arcade · 2D

Click and Conquer
Shared: Casual · Simulation · Pixel Graphics

Timberman
Shared: Casual · Pixel Graphics · Singleplayer

Potion Craft: Alchemist Simulator
Shared: Simulation · Singleplayer · Casual

112 Operator
Shared: Simulation · Casual · Time Management

Shawarma Legend
Shared: Simulation · Time Management · Singleplayer

Plague Inc: Evolved
Shared: Simulation · Singleplayer · Casual

Stardew Valley
Shared: Simulation · Pixel Graphics · Casual

People Playground
Shared: Singleplayer · Simulation · 2D

Peggle Deluxe
Shared: Casual · Singleplayer · Arcade

Mountain
Shared: Simulation · Casual · Singleplayer

Papa's Pizzeria Deluxe
Shared: Simulation · Casual · Time Management