Sonic Extreme * This game's plot would be a rehash of the Sonic OVA, explaining Metal Sonic's origins and why there can only be one of him. Naturally, this would mean he wouldn't die in the end. It would take place between Sonic 3 & Knuckles and Sonic CD. Sonic VS Cinos Sonic Rebellion Sonic Project Needlemouse * Retells the events of Shadow the Hedgehog from Sonic and his friend's perspectives, thus he majority of Sonic and his friends would be playable excluding Shadow of course. Final boss would be Black Doom in his base form. Sonic Dimensions Sonic Devils Silver the Hedgehog Sonic Universe