絶体絶命都市 4: Summer Memories

Zettai Zetsumei Toshi 4: Summer Memories is an adventure game and was to be the fourth installment of the Zettai Zetsumei Toshi series. Initially, the game was planned for release on March 10, 2011, a day before the 2011 Touhoku earthquake and tsunami, but was pushed back to a Spring time frame. Chief producer, Kazuma Kujo said the reason for the delay was because the game could not be completed in time. The game was officially cancelled on March 14, 2011.