Games like Amphibarium
Games like Amphibarium include Spirit City: Lofi Sessions, Chillquarium, Tiny Pasture, Cast n Chill, and Cornerpond. We matched them by the tags players give Amphibarium on Steam (Creature Collector, Idler, Desktop Companion, Cozy, and Relaxing): closest matches first, and among equally close ones the better-known games.
Spirit City: Lofi Sessions
Shared: Desktop Companion · Cozy · Creature Collector
Chillquarium
Shared: Creature Collector · Idler · Collectathon
Tiny Pasture
Shared: Idler · Creature Collector · Incremental
Cast n Chill
Shared: Idler · Relaxing · Creature Collector
Cornerpond
Shared: Idler · Desktop Companion · Creature Collector
Ropuka's Idle Island
Shared: Idler · Desktop Companion · Cozy
Bongo Cat
Shared: Desktop Companion · Idler · Cute
Fish to Dish: Idle Sushi
Shared: Idler · Desktop Companion · Creature Collector
How to Train Your Cock
Shared: Idler · Desktop Companion · Cozy
Cookie Clicker
Shared: Idler · Incremental · Collectathon
Kabuto Park
Shared: Creature Collector · Cozy · Nature
Shelldiver
Shared: Incremental · Idler · Relaxing
Keep on Mining!
Shared: Idler · Incremental · Relaxing
Slime Rancher 2
Shared: Relaxing · Creature Collector · Cute
Lakeside Bar
Shared: Idler · Desktop Companion · Cozy
Chonkers
Shared: Creature Collector · Idler · Cozy
Rusty's Retirement
Shared: Idler · Desktop Companion · Relaxing
Joyquarium
Shared: Creature Collector · Idler · Relaxing
Digseum
Shared: Idler · Incremental · Relaxing
Birdwatching Notebook
Shared: Idler · Creature Collector · Desktop Companion
Croakoloco
Shared: Creature Collector · Idler · Incremental
Bugtopia
Shared: Idler · Creature Collector · Incremental
My Little Life
Shared: Idler · Desktop Companion · Creature Collector
Creature Kitchen
Shared: Creature Collector · Cozy · Relaxing