Sega has just announced that they will be releasing several classic Genesis games on XBLA. Among the announced games are many fan favorites such as Shinobi, Comix Zone, Altered Beast, Sonic the Hedgehog 3, Phantasy Star II, and Sonic & Knuckles. Sega announced that all the games will have re-worked graphics, and online leaderboards. Each game will be released separably, however there's no word on when each game will be released. Interestingly enough Sonic & Knuckles will have the "lock-on" feature which allowed gamers to play as Knuckles in Sonic 2 & 3, making it available for the first time to everyone since the original, no word on how this will actually work however.