The Sega Genesis Collection , also known as the Sega Mega Drive Collection in PAL regions, is a video game compilation for thePlayStation 2 and PSP, compiled and emulated by Digital Eclipse and released in the U.S. in 2006 and Europe and Australia in 2007. The collection includes twenty-eight (twenty-seven in the PAL versions) Sega Genesis games from a variety of genres, as well as unlockable classic Sega arcade games, with different sets of arcade games for the PlayStation 2 and PSP versions.