Games like An Altered State
Games like An Altered State include The Test, Game Dev Tycoon, Firework, Plague Inc: Evolved, and Papers, Please. We matched them by the tags players give An Altered State on Steam (Casual, Simulation, Software, Visual Novel, and Choose Your Own Adventure): closest matches first, and among equally close ones the better-known games.
The Test
Shared: Simulation · Choose Your Own Adventure · Visual Novel
Game Dev Tycoon
Shared: Simulation · Casual · Indie
Firework
Shared: 2D · Indie · Visual Novel
Plague Inc: Evolved
Shared: Simulation · Casual · Indie
Papers, Please
Shared: Simulation · Indie · Singleplayer
The Test: Hypothesis Rising
Shared: Simulation · Visual Novel · Choose Your Own Adventure
Class of '09
Shared: Casual · Choose Your Own Adventure · Visual Novel
Emily is Away <3
Shared: Simulation · Casual · Visual Novel
911 Operator
Shared: Simulation · Casual · Indie
Cookie Clicker
Shared: Casual · Horror · Indie
Russian Life Simulator
Shared: Simulation · 2D · Casual
Class of '09: The Re-Up
Shared: Visual Novel · Casual · Simulation
Passpartout: The Starving Artist
Shared: Casual · Simulation · Indie
Tricolour Lovestory
Shared: Visual Novel · Simulation · Casual
Potion Craft: Alchemist Simulator
Shared: Simulation · Casual · 2D
Mini Motorways
Shared: Simulation · Casual · Indie
鬼谷八荒 Tale of Immortal
Shared: Simulation · Choose Your Own Adventure · Singleplayer
Flowers Blooming at the End of Summer
Shared: Casual · Visual Novel · Indie
Tiny Bunny
Shared: Visual Novel · Atmospheric · Horror
Love Delivery
Shared: Simulation · Casual · Visual Novel
That's not my Neighbor
Shared: Casual · Simulation · 2D
Gorogoa
Shared: Casual · Indie · Atmospheric
Slay the Princess — The Pristine Cut
Shared: Visual Novel · Choose Your Own Adventure · Horror
Touhou Mystia's Izakaya
Shared: Casual · Simulation · 2D