SEGA reveals two new Sonic Games coming in 2017 Sonic celebrated his 25th anniversary at a sold out event on Friday evening during San Diego Comic-Con held at the House of Blues. Today, SEGA revealed two new Sonic games: Sonic Mania and an untitled original game for release on consoles and PC in 2017. Sonic Mania brings fans back into the 2D world of platform games with nostalgic pixel-style art and core classic gameplay by reimagining iconic Zones and Acts from Sonic The Hedgehog, Sonic The Hedgehog 2, Sonic CD and Sonic The Hedgehog 3 and Knuckles, and adding in completely new Zones with all-new Acts, and bosses into the mix.