Reduced in-game lag and improved overall speed.

- Expanded representative routes by country (14 countries · 27 lines · 671 stations) - Added support for French, Norwegian, Danish, German, Dutch, Swedish, Spanish, and Russian - Added Busan Donghae Line (23 stations): Added the full section from Bujeon to Taehwagang to Busan line selection and transit map - Reflected Seoul Subway Line 1 Yeoncheon Extension: Added the `Yeoncheon → Jeongok → Cheongsan → Soyosan` section - Reflected Seoul Subway Line 4 Jinjeop Extension: Added the `Jinjeop → Onam → Byeollae Byeolgaram → Buramsan` section - Improved app stability and fixed bugs

- Added Japanese routes - Added Hong Kong MTR stations and routes - Enhanced game visual effects - Adjusted answer judgment criteria

- Updated line and station designs - New Quests Tab: 16 unique achievements, from your first clear to a 30-combo, international expeditions, and 3-minute speedruns - Combo System: Keep a correct answer streak going to make your combo badge heat up - Start Animation: Begin your run with a thrilling "3·2·1·Go!" countdown - Train Animation: Watch the train on the route map speed to the next station every time you get an answer right

International Lines Are Now Open! You can now run through the subways of Tokyo, Osaka, New York, and Taipei. - Japan: Yamanote, Ginza, Marunouchi, Hibiya, Midosuji, and Tanimachi Lines (142 stations) - New York, USA: 1, 7, L, and G Trains (105 stations) - Taipei, Taiwan: Tamsui-Xinyi, Bannan, Songshan-Xindian, and Wenhu Lines (93 stations) - Multi-language Support: English, Korean, Japanese, Simplified Chinese, and Traditional Chinese - Added Keyboard Typing Sound Effects