Games like Ark of Charon
Games like Ark of Charon include RimWorld, SPORE™, Banished, Prison Architect, and Oxygen Not Included. We matched them by the tags players give Ark of Charon on Steam (Simulation, Strategy, Colony Sim, Tower Defense, and Sandbox): closest matches first, and among equally close ones the better-known games.

RimWorld
Shared: Colony Sim · Strategy · Sandbox

SPORE™
Shared: Simulation · Colony Sim · Sandbox

Banished
Shared: Strategy · Colony Sim · Simulation

Prison Architect
Shared: Simulation · Colony Sim · Sandbox

Oxygen Not Included
Shared: Colony Sim · Simulation · Sandbox

Dwarf Fortress
Shared: Colony Sim · Simulation · Strategy

Rise to Ruins
Shared: Colony Sim · Tower Defense · Strategy

Castle Story
Shared: Strategy · Colony Sim · Sandbox

Manor Lords
Shared: Strategy · Simulation · Sandbox

Amazing Cultivation Simulator
Shared: Simulation · Strategy · Sandbox

Space Haven
Shared: Colony Sim · Strategy · Simulation

Stonehearth
Shared: Colony Sim · Strategy · Simulation

Dawn of Man
Shared: Colony Sim · Strategy · Simulation

Kingdoms and Castles
Shared: Colony Sim · Simulation · Strategy

The Wandering Village
Shared: Simulation · Colony Sim · Exploration

Empires of the Undergrowth
Shared: Simulation · Strategy · Colony Sim

Settlement Survival
Shared: Colony Sim · Simulation · Strategy

Against the Storm
Shared: Simulation · Strategy · Colony Sim

Totally Accurate Battle Simulator
Shared: Simulation · Sandbox · Strategy

Stellaris
Shared: Strategy · Simulation · Sandbox

Craft The World
Shared: Colony Sim · Sandbox · Strategy

Foundation
Shared: Simulation · Strategy · Sandbox

Timberborn
Shared: Colony Sim · Sandbox · Strategy

Stardew Valley
Shared: Farming Sim · Simulation · Sandbox