Games like Outside the Window
Games like Outside the Window include Vampire Survivors, Mini Motorways, DAVE THE DIVER, Touhou Mystia's Izakaya, and Papers, Please. We matched them by the tags players give Outside the Window on Steam (Casual, Simulation, City Builder, Education, and Roguelite): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Roguelite · Pixel Graphics · 2D

Mini Motorways
Shared: Simulation · Casual · Minimalist

DAVE THE DIVER
Shared: Casual · Pixel Graphics · Simulation

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

Papers, Please
Shared: Simulation · Pixel Graphics · Indie

TheoTown
Shared: Simulation · City Builder · Pixel Graphics

Game Dev Tycoon
Shared: Simulation · Casual · 2D

Freeways
Shared: Simulation · Casual · 2D

Stardew Valley
Shared: Simulation · Pixel Graphics · Casual

Nodebuster
Shared: Casual · Simulation · 2D

911 Operator
Shared: Simulation · Casual · Indie

Townscaper
Shared: Casual · City Builder · Simulation

Cities: Skylines
Shared: Simulation · City Builder · Casual

Cookie Clicker
Shared: Casual · Pixel Graphics · Indie

Mini Metro
Shared: Simulation · Casual · Minimalist

Simmiland
Shared: Simulation · Casual · Pixel Graphics

Ballads of Hongye: REBORN
Shared: Casual · City Builder · Simulation

Project Highrise
Shared: Simulation · 2D · Casual

Plague Inc: Evolved
Shared: Simulation · Casual · Indie

Unfair Flips
Shared: Casual · Simulation · 2D

Unpacking
Shared: Casual · Pixel Graphics · Simulation

Littlewood
Shared: City Builder · Simulation · Pixel Graphics

House Flipper
Shared: Simulation · Casual · Education

Dorfromantik
Shared: Casual · City Builder · Simulation

