Dive into a one-of-a-kind treasure hunt across Japan with Manhole GO.
Discover manhole cards (マンホールカード), free collectible cards inspired by Japan’s uniquely designed manhole covers.
Find distribution locations on an interactive map, browse the full catalog (by series, category, or prefecture), and manage your collection as you explore.
Don’t speak Japanese? No problem: Manhole GO can translate each card’s distribution details to help you plan your visits.
Save your collected cards, favorites, and wanted cards, keep them synced across your devices, and share your collection with friends.
Switch to Expedition mode for your field trips: plan a smart route to grow your collection, make more discoveries, and explore new places.
No ads, no personal data collection.
What's new (v1.7.1)
Our biggest update yet!
- Custom lists: organize your cards the way you want by creating your own lists.
- Redesigned Browse tab: more practical and complete, making the card catalog easier to explore.
- Better iPad experience: clearer, faster navigation designed for larger screens.
- Card variants: support for special versions, such as Gold Edition and English versions.
- NaviBridge integration: easily start navigation to a distribution point or manhole cover.
- Enhanced display options: sort, group, and filter your cards in collections and lists.
- Quick actions: long-press a card to access available actions.