Sega Mega Drive Collection PSP

The Sega Mega Drive Collection (known in the U.S. as the Sega Genesis Collection) is a video game compilation for the PlayStation 2 and PSP, compiled and emulated by Digital Eclipse. It includes twenty-eight Sega Mega Drive/Genesis games from a variety of genres and ranging from 1989–96, as well as five unlockable classic Sega arcade games. Later a game compilation was released called Sonic's Ultimate Genesis Collection, which had many of the same games as the original, plus several more. 

List of games:

Alex Kidd in the Enchanted Castle – Released in 1989
Altered Beast (Mega Drive/Genesis and Arcade versions) – Released in 1989
Bonanza Bros. (Mega Drive/Genesis and Arcade versions) – Released in 1990
Columns (Mega Drive/Genesis and Arcade versions) – Released in 1990
Comix Zone – Released in 1995
Decap Attack – Released in 1991
Ecco the Dolphin – Released in 1993
Ecco: The Tides of Time – Released in 1994
Ecco Jr. – Released in 1995
Flicky (Mega Drive/Genesis and Arcade versions) – Released in 1991
Gain Ground (Mega Drive/Genesis and Arcade versions) – Released in 1991
Golden Axe (Mega Drive/Genesis and Arcade versions) – Released in 1989
Golden Axe II – Released in 1991
Golden Axe III – Released in 1993
Kid Chameleon – Released in 1992
Phantasy Star II – Released in 1989
Phantasy Star III: Generations of Doom – Released in 1991
Phantasy Star IV: The End of the Millennium – Released in 1994
Ristar – Released in 1995
Shadow Dancer: The Secret of Shinobi (unavailable in the PAL version) – Released in 1990
Shinobi III: Return of the Ninja Master – Released in 1993
Sonic The Hedgehog – Released in 1991
Sonic The Hedgehog 2 – Released in 1992
Super Thunder Blade – Released in 1988
Sword of Vermilion – Released in 1990
Vectorman – Released in 1995
Vectorman 2 – Released in 1996
Virtua Fighter 2 (Mega Drive/Genesis and Arcade versions) – Released in 1996