It’s the third title in about 4 weeks: GREE is planning to shut down another one of their first-party social games, Dragon Master, on August 24.
Earlier this month, GREE announced it will scratch Bakumatsu Kingdom (on July 2) and Sangokushi Kingdom (which will be removed today).
GREE didn’t specify reasons as to why Dragon Master will be shut down. The social RPG went live on GREE for feature phones on August 11, 2011.