Busan Dong-gu's mobile stamp tour runs September 1–October 31, 2026. The KTO listing distinguishes monthly draws for 50 route finishers, another draw of 20 people who complete all eight routes, and a draw for 10 review writers. Completing a challenge is not a guaranteed prize. Verify the app, GPS settings, review format and winner announcements with Dong-gu at 051-440-4714.