Games like Automata Ecosystem - Cellular Automata Simulation
Games like Automata Ecosystem - Cellular Automata Simulation include Stardew Valley, People Playground, Papers, Please, Graveyard Keeper, and Terraria. We matched them by the tags players give Automata Ecosystem - Cellular Automata Simulation on Steam (Simulation, Sandbox, 2D, Indie, and Surreal): closest matches first, and among equally close ones the better-known games.

Stardew Valley
Shared: Pixel Graphics · Simulation · Life Sim

People Playground
Shared: Sandbox · 2D · Simulation

Papers, Please
Shared: Simulation · Indie · Pixel Graphics

Graveyard Keeper
Shared: Simulation · Pixel Graphics · Sandbox

Terraria
Shared: Sandbox · 2D · Pixel Graphics

WorldBox - God Simulator
Shared: Sandbox · Simulation · Pixel Graphics

Sand:box
Shared: Simulation · Sandbox · 2D

Potion Craft: Alchemist Simulator
Shared: Simulation · Indie · 2D

鬼谷八荒 Tale of Immortal
Shared: Simulation · Sandbox · Singleplayer

The Escapists
Shared: Simulation · Pixel Graphics · 2D

Noita
Shared: Sandbox · Pixel Graphics · Indie

Game Dev Tycoon
Shared: Simulation · Indie · 2D

Totally Accurate Battle Simulator
Shared: Simulation · Sandbox · Indie

TheoTown
Shared: Simulation · Sandbox · Pixel Graphics

Paralives
Shared: Simulation · Life Sim · Indie

Baba Is You
Shared: Indie · Pixel Graphics · 2D

The Escapists 2
Shared: 2D · Pixel Graphics · Simulation

Beat Cop
Shared: Indie · Simulation · Pixel Graphics

Not Tonight
Shared: Simulation · Pixel Graphics · Life Sim

Fields of Mistria
Shared: Simulation · Pixel Graphics · Life Sim

Forager
Shared: Pixel Graphics · Indie · Sandbox

The Sims™ 4
Shared: Simulation · Life Sim · Sandbox

Horsey Game
Shared: Simulation · Sandbox · 2D

Kerbal Space Program
Shared: Simulation · Sandbox · Indie