It may have taken a few more weeks in the over, but the Nintendo 3DS version of Sonic Generations is finally here. The 3D version of Sonic’s latest adventure sped into stores this week and Sega has prepared an entirely new launch trailer for the game, focusing on the new portable version, which you can find below. The 3DS version of Sonic Generations is more than just a portable port of the console version of the game and features a variety of unique gameplay elements and levels not found in the big-brother versions.