Games like Little Aquarium
Games like Little Aquarium include Cookie Clicker, Cast n Chill, Tiny Pasture, Nodebuster, and Chillquarium. We matched them by the tags players give Little Aquarium on Steam (Casual, Cozy, Simulation, Underwater, and Creature Collector): closest matches first, and among equally close ones the better-known games.

Cookie Clicker
Shared: Casual · Idler · Pixel Graphics

Cast n Chill
Shared: Cozy · Pixel Graphics · Casual

Tiny Pasture
Shared: Casual · Idler · Pixel Graphics

Nodebuster
Shared: Casual · Simulation · Idler

Chillquarium
Shared: Creature Collector · Idler · Cozy

Megaquarium
Shared: Casual · Simulation · Underwater

Shelldiver
Shared: Casual · Simulation · Idler

MyVoiceZoo
Shared: Casual · Simulation · Creature Collector

Cornerpond
Shared: Simulation · Idler · Casual

DAVE THE DIVER
Shared: Casual · Pixel Graphics · Underwater

Game Dev Tycoon
Shared: Simulation · Casual · Strategy

Click the Button
Shared: Casual · Simulation · Idler

Stardew Valley
Shared: Pixel Graphics · Simulation · Sandbox

Your Big, Cute Monster Farm
Shared: Casual · Simulation · Creature Collector

Maltese's Fluffy Onsen
Shared: Simulation · Casual · Pixel Graphics

Digseum
Shared: Casual · Simulation · Idler

Touhou Mystia's Izakaya
Shared: Casual · Simulation · Pixel Graphics

Joyquarium
Shared: Simulation · Creature Collector · Casual

Dragon Cliff
Shared: Casual · Idler · Strategy

(the) Gnorp Apologue
Shared: Idler · Strategy · Casual

Click and Conquer
Shared: Casual · Simulation · Pixel Graphics

Fortune Mill
Shared: Simulation · Idler · Casual

Chill Pulse
Shared: Casual · Simulation · Idler

Spirit City: Lofi Sessions
Shared: Cozy · Creature Collector · Casual