Games like Ardarium
Games like Ardarium include WorldBox - God Simulator, Stardew Valley, Universe Sandbox, Sand:box, and House Flipper. We matched them by the tags players give Ardarium on Steam (Simulation, Casual, Sandbox, Education, and Colorful): closest matches first, and among equally close ones the better-known games.

WorldBox - God Simulator
Shared: Simulation · Sandbox · Destruction

Stardew Valley
Shared: Simulation · Relaxing · Sandbox

Universe Sandbox
Shared: Simulation · Sandbox · Relaxing

Sand:box
Shared: Simulation · Sandbox · Relaxing

House Flipper
Shared: Simulation · Sandbox · Casual

Equilinox
Shared: Simulation · Casual · Sandbox

People Playground
Shared: Sandbox · Simulation · Destruction

PowerWash Simulator
Shared: Casual · Simulation · Relaxing

Reus
Shared: Simulation · Sandbox · Casual

SPORE™
Shared: Sandbox · Simulation · Casual

Tiny Glade
Shared: Sandbox · Casual · Relaxing

Planet Coaster
Shared: Simulation · Sandbox · Relaxing

PC Building Simulator
Shared: Simulation · Education · Sandbox

Potion Craft: Alchemist Simulator
Shared: Simulation · Relaxing · Sandbox

Sticky Business
Shared: Casual · Simulation · Relaxing

Game Dev Tycoon
Shared: Simulation · Casual · Sandbox

Mountain
Shared: Simulation · Casual · Relaxing

SUMMERHOUSE
Shared: Sandbox · Casual · Relaxing

Townscaper
Shared: Sandbox · Casual · Relaxing

Goat Simulator
Shared: Simulation · Sandbox · Casual

Totally Accurate Battle Simulator
Shared: Simulation · Sandbox · Colorful

Sandboxels
Shared: Sandbox · Education · Casual

PowerWash Simulator 2
Shared: Casual · Simulation · Relaxing

Nodebuster
Shared: Casual · Simulation · 2D