A Shimeji for Mac — but it's your own pet.
Love how Shimeji characters cling to your windows and climb around? Peekoo brings that same charm to macOS as a tiny native app — and the mascot is made from a photo of anyone you like.
This is how it keeps you company
Climbs · Jumps
Scales the sides of your screen and leaps between windows — your desktop is its playground.
Parachutes down
Falling from up high, it pops open a tiny parachute and drifts gently down.
Grooves to music
The moment music plays, it closes its eyes and sways to the beat.
Naps when you leave
Step away and it tucks itself into its little bed and drifts off.
Shimeji, but native to your Mac
Classic Shimeji started on Windows and needs Java plus downloaded character packs. Peekoo is a native macOS app — no Java, no pack-hunting. It walks across your desktop and along the top edge of every window, climbs the sides, leaps between windows and parachutes down, just like the mascots you love.
Make your own mascot from a photo
Instead of picking from someone else's character packs, upload a photo of a friend, your cat, or yourself — Peekoo turns it into your own desktop pet in about a minute. It also types along when you type, grooves to your music and naps when you step away.
Classic Shimeji vs Peekoo
| Peekoo | Classic Shimeji | |
|---|---|---|
| Made from your own photo | ✓ Any photo · ~1 min | Hunt & download packs |
| Install & go | ✓ Native app — no Java | Java runtime required |
| Walks, climbs & rides windows | ✓ | ✓ |
| Types, grooves & naps | ✓ | — |
| Auto-updates · 7 languages | ✓ | Unmaintained for years |
Peekoo is the only one made from your own photo.
Is there a real Shimeji for Mac?
The original Shimeji is a Windows/Java app. Peekoo is a native macOS alternative that captures the same window-climbing, desktop-roaming charm — without Java or character-pack downloads.
Do I need to download character packs?
No. You create your own mascot from any photo, so there's nothing to hunt for.
Is it free?
Yes — free to start, with a built-in pet ready to go. Upgrade unlocks every move and multiple pets.
Shimeji for Windows · Desktop pet for Windows · Desktop pet for Mac · Bongo Cat alternative