Mammalarium
Relax and collect over 500 unique mammals in this cozy idle game. Watch babies grow into magnificent adults in real-time, customize warm woodland habitats across 9 themed packs, and discover rare species from tiny shrews to great whales.
Welcome to Mammalarium — your personal wildlife sanctuary built from golden autumn woodland, mossy fallen logs, and clear running streams. Discover, care for, and grow over 500 unique mammal species across nine richly themed habitats.
Bring Your Mammals to Your Desktop
With a single click, your mammals leave the habitat and roam freely across your real desktop — characterful, transparent companions padding over your windows while you work, study, or browse. They never get in the way: clicks pass right through them, and a tap of ESC sends them home. Your living collection, alive on your screen.
Collect Over 500 Unique Mammal Species
Build the ultimate mammal library across nine themed packs — Cats & Civets, Dogs & Bears, Rodents & Rabbits, Marsupials, Primates, Deer & Antelope, Hoofed Giants, Sea Mammals, and Ancient Oddities. Each species is assigned one of seven rarity tiers — from Common to Ancient. Unlock stunning visual variants: Normal, Painted, Golden, and Rainbow. From tiny shrews to great whales, complete your collection one species at a time.
Watch Babies Grow Into Magnificent Adults
Witness the wild come alive in real time. Tiny babies wobble into your habitat on unsteady legs. Watch them grow into magnificent adults — foxes trotting through fallen leaves, red pandas dozing along a branch, elephants raising dust at the waterhole. Release them for instant rewards, or keep them in your habitat for steady passive income. Every decision shapes your strategy.
Earn While You're Away
Your sanctuary keeps thriving in the background while you work, study, or browse the web. The automatic feeding system keeps your mammals happy and fed; when you return, gathered rewards are waiting. No pressure, no timers — just progress at your own pace.
Design Your Dream Habitats
Choose from logs, ferns, boulders, decorations, and day-night lighting cycles. Customize multiple habitats exactly the way you want. Build a golden autumn woodland, a red desert outback, or a misty cypress swamp — this is your sanctuary, your rules.
Compete on Global Leaderboards
Climb the rankings by total collection value or by the number of unique species you've discovered. See how your sanctuary measures up against mammal keepers worldwide.
