3d6 Games was an American video game developer founded by ex-Digital Eclipse programmers William S. Schmitt[1] and Troy Sheets. The studio was initially active between 1999 and 2002, during which period it created games exclusively for the Game Boy Color and Game Boy Advance. The company developed original games based on properties such as Tetris Worlds (IP by Blue Planet Software), The Revenge of Shinobi (IP by Sega) and Altered Beast: Guardian of the Realms (also original IP by Sega). Two internal projects from the studio, Rocket Dog! and Slider, were never completed. In 2012, 3d6 Games was relaunched as a developer for mobile games for iOS, Android and Windows 8. However, the company only released one game (Sums Academy for iOS) after the relaunch, and has not been active since 2013.