Com2uS Holdings is bringing a little piece of Seoul to its mobile puzzle game ColorSweeper through a new collaboration with My Secret Friend, HECHI, introducing collectible stickers, exclusive customization options, and special rewards inspired by South Korea’s capital.
Announced on November 13, the Secret Seoul Tour with HECHI season runs through December 17 and marks the first video game collaboration for My Secret Friend, HECHI, an animated series starring HECHI, the official mascot of Seoul. The crossover gives players an opportunity to explore some of the city’s recognizable landmarks and popular foods through ColorSweeper’s puzzle-solving and collection features.
Throughout the event, players can solve puzzles to unlock eight collectible stickers featuring HECHI, Seoul attractions such as N Seoul Tower, DDP, and Gyeongbokgung Palace, as well as familiar Korean dishes including tteokbokki, kimchi, and gimbap. These collectibles can then be used to customize personal Art Galleries, giving players a new way to showcase their progress. Those who complete the entire sticker collection will also receive two additional Sticker Bases.
The collaboration also introduces a series of special missions offering additional HECHI-themed rewards. Players who complete the available objectives can earn a HECHI Special Sticker, a HECHI Special Palette, and an exclusive Profile Frame. The special palette incorporates four of HECHI’s signature colors, while the Sweeper character receives a HECHI-inspired costume. Players will also find exclusive background artwork and a special HECHI animation that plays upon completing a puzzle.
For those unfamiliar with the animated series, My Secret Friend, HECHI is co-produced by the Seoul Metropolitan Government, Iconix, and EBS. The show follows HECHI as he arrives in Seoul and begins exploring the city alongside an elementary school student named Yunho, introducing younger audiences to the capital through their adventures.
Meanwhile, ColorSweeper offers a different kind of exploration, challenging players to interpret numerical and color clues to complete puzzle grids. Rather than relying on guesswork or luck, its puzzles are designed around logical deduction, making careful observation and problem-solving central to the experience.
The Secret Seoul Tour with HECHI season is available in ColorSweeper through December 17, giving players a limited window to collect the collaboration’s stickers, customize their Art Galleries, and unlock the exclusive rewards.