Updated May 15, 2026 · v1.3.5
A real-time shared GPS stamp rally where participants launch balloons in the mountains of Gifu City.
Let's launch a balloon signal from a mountaintop in Gifu City! Once you reach the mountaintop, you can release a "balloon signal" into the sky. This signal will appear in real time on other users' maps, letting them know that "someone is there at this very moment." Somewhere on a mountain today, someone might be launching a balloon signal. Open the app and you can encounter this signal as it spreads on the wind.
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