Games like Idle Aquarium
Games like Idle Aquarium include WorldBox - God Simulator, Stardew Valley, SPORE™, Reus, and The Sims™ 4. We matched them by the tags players give Idle Aquarium on Steam (Casual, God Game, Sandbox, Life Sim, and Idler): closest matches first, and among equally close ones the better-known games.
WorldBox - God Simulator
Shared: God Game · Sandbox · Life Sim
Stardew Valley
Shared: Life Sim · Sandbox · Casual
SPORE™
Shared: God Game · Sandbox · Casual
Reus
Shared: God Game · Casual · Sandbox
The Sims™ 4
Shared: Life Sim · Sandbox · Casual
MyVoiceZoo
Shared: Casual · Sandbox · Creature Collector
Mountain
Shared: Casual · God Game · Indie
Paralives
Shared: Life Sim · Sandbox · Casual
The Sims™ 3
Shared: Life Sim · Sandbox · Casual
My Time at Portia
Shared: Life Sim · Casual · Sandbox
Garry's Mod
Shared: Sandbox · Casual · Simulation
Ages of Conflict: World War Simulator
Shared: God Game · Sandbox · Idler
Cookie Clicker
Shared: Casual · Idler · Indie
The Sapling
Shared: God Game · Sandbox · Life Sim
Universe Sandbox
Shared: Sandbox · God Game · Realistic
Pumping Simulator 2
Shared: Casual · Life Sim · Time Management
Fish Game
Shared: Sandbox · Creature Collector · Idler
Farm Together 2
Shared: Sandbox · Life Sim · Casual
Megaquarium
Shared: Casual · Sandbox · Creature Collector
People Playground
Shared: Sandbox · 2D · Casual
Potion Craft: Alchemist Simulator
Shared: Casual · Sandbox · 2D
Equilinox
Shared: Casual · Sandbox · God Game
Maltese's Fluffy Onsen
Shared: Casual · Idler · Life Sim
Horsey Game
Shared: Sandbox · Life Sim · Creature Collector