From Wikipedia: Dead Island: Riptide is a 2013 action role-playing game developed by Techland and published by Deep Silver. Released in April 2013 for Microsoft Windows, PlayStation 3 and Xbox 360, Riptide serves as a continuation of the story to 2011's Dead Island, with the original four survivors, plus a new survivor, arriving on another island in the Banoi archipelago, which has also been overrun by zombies.