About Hamsteropolis
Why we build modular worlds for small pets
Small animals deserve bigger adventures.
Hamsteropolis is a modular enrichment system for small-pet enclosures — snap-in pieces and themed worlds that give hamsters and other small pets more places to explore, hide, climb, and play.
The idea
Most small-pet habitats are static: a cage, a wheel, a hide, and not much else to do. We think enclosures can be worlds instead — open, viewable environments full of places to explore, hide, climb, and discover.
So we design modular pieces that snap together inside a proper enclosure, creating themed worlds that are fun to watch, easy to rearrange, and built around enrichment. Castles, treehouses, caves, cottages, outposts — all connected through HabitatLink, one hidden rail system, and designed to keep the animal visible, safe, and engaged.
We obsess over connector fit, layout safety, materials, cleaning, and durability. Every piece is designed and built to order right here in Kansas, USA. Our first world — the Castle Keep set — is available now, with more themed worlds on the way.
Modular by design
HabitatLink™, one hidden slide-in connector, runs through every piece we make, so walls, towers, bridges, and tunnels lock together — and come apart — without glue, screws, or permanent assembly.
Safety first
Rounded edges, pet-safe durable plastics, open sightlines, and easy disassembly for cleaning. A habitat should get more interesting without getting harder to monitor or keep safe.
Worlds that grow
Castle Keep is only the first theme. Treehouses, caves, cottages, and outposts all share the same HabitatLink standard, so a collection keeps expanding instead of gathering dust.
Meet Sir Fluffington
Chief of Tiny Adventures · Lead Habitat Tester
Sir Fluffington is the small adventurer at the heart of Hamsteropolis — the reason we started imagining bigger, more creative worlds in the first place. Every new piece gets the most important review there is: does Sir Fluffington actually want to explore it?
Start your build
The Castle Keep set is available now — start small, snap it together, and rebuild your pet's world anytime.
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