Arriving under the "SEGA Vintage Collection 2" banner, each game will be sold separately at an as-yet-unknown price point, and has been updated to support high definition visuals, online leaderboards, and, if applicable, online play.
While Gunstar Heroes will hit both Xbox 360 and PlayStation 3, it appears as if the rest of the titles--Altered Beast, Shinobi, Comix Zone, Phantasy Star 2, Sonic the Hedgehog 3--are currently exclusive to the Xbox Live Arcade, with the final release, Sonic & Knuckles, likewise arriving as an XBLA exclusive later this summer.
Details, screenshots and descriptions of each game follow below:
Gunstar Heroes - June 10 (XBLA), June 11 (PSN) / Online Play nope "The classic side scrolling shooter from the SEGA Genesis returns to captivate fans new and old with its non-stop action and cooperative play."
Altered Beast (XBLA) - June 10 / Online Play nope "'Rise from your Grave' as the original Genesis launch game is reborn and comes to a new generation of gamers. Battle hordes of undead warriors and monsters as you return to battle in order to save Zeus' daughter Athena."
Shinobi (arcade) (XBLA) - June 10 / No Online nope "Battle your way through the 'Ring of Five' as you save hostages with your ninja abilities."
Comix Zone (XBLA) - June 10 / No Online nope "The game features an innovative art style that transports players directly into the panels of a comic as they fight their way to save a world from destruction as Sketch Turner. Everything from the speech bubble text, level design, and the revolutionary graphics scream COMIX!"
Phantasy Star 2 (XBLA) - June 10 / No Online nope "SEGA's classic RPG which expanded on the success of the first with its epic storyline and battle system."
Sonic the Hedgehog 3 (XBLA) - June 10 / Online Play nope "The game that introduced Knuckles the Echidna comes to a new generation of gamers as Sonic explores Angel Island and discovers the true power of the Master Emerald. Speed through each level at lightning speeds as either Sonic or Tails as you foil Dr. Eggman's in his new Death Egg station."
Sonic and Knuckles (XBLA) - Late Summer 2009 / Online Play nope "Picking up where Sonic the Hedgehog 3 left off, players can now play as Knuckles for the first time. In addition, if players already have Sonic the Hedgehog 3 or Sonic 2 in their library, they will be able to access the lock-on bonus content for each game for the very first time since the days of the SEGA GENESIS! This allows for gamers to play Sonic 2 & 3 as Knuckles!"