EXCAPE INDIGO BLUE is an escape room venue in Sinchon, Seoul, located underground at 21 Yonsei-ro 5ga-gil in Seodaemun-gu. It runs themed rooms including Dream Post and Fly Me to the Moon, which are built around story and immersion, with sets and device-driven puzzles. Dream Post allows ample time and unlimited hints. It has many puzzles and a high difficulty level, making it hard for escape room beginners.