Games like Chaos Starter
Games like Chaos Starter include Goat Simulator, Gang Beasts, Totally Accurate Battle Simulator, Garry's Mod, and Superflight. We matched them by the tags players give Chaos Starter on Steam (Casual, Simulation, Action, Indie, and Adventure): closest matches first, and among equally close ones the better-known games.

Goat Simulator
Shared: Simulation · Casual · Funny

Gang Beasts
Shared: Action · Casual · Funny

Totally Accurate Battle Simulator
Shared: Simulation · Singleplayer · Indie

Garry's Mod
Shared: Casual · Physics · Simulation

Superflight
Shared: Casual · Indie · Action

Wobbly Life
Shared: Adventure · Simulation · Casual

House Flipper
Shared: Simulation · Singleplayer · Casual

Turbo Dismount™
Shared: Simulation · Action · Singleplayer

Sparkle 2 Evo
Shared: Casual · Simulation · Indie

Crime Scene Cleaner
Shared: Simulation · Singleplayer · Action

I Am Bread
Shared: Simulation · Adventure · Action

DAVE THE DIVER
Shared: Casual · Adventure · Singleplayer

Getting Over It with Bennett Foddy
Shared: Singleplayer · Indie · Physics

Passpartout: The Starving Artist
Shared: Casual · Simulation · Indie

Slime Rancher
Shared: Adventure · Singleplayer · Simulation

Game Dev Tycoon
Shared: Simulation · Casual · Indie

SuchArt: Creative Space
Shared: Simulation · Singleplayer · Casual

Caster
Shared: Action · Indie · Casual

Donut County
Shared: Casual · Indie · Adventure

Retrowave
Shared: Casual · Indie · Simulation

Human Fall Flat
Shared: Adventure · Funny · Action

Mountain
Shared: Simulation · Casual · Indie

Bully: Scholarship Edition
Shared: Action · Adventure · Singleplayer

Thief Simulator 2
Shared: Simulation · Action · Singleplayer