Take control of Sonic or Knuckles, each one with his own abilities and go through a GIANT adventure with a lot of zones, levels, special stages, missions, badnicks, a gallery with some collectables and much much more. In the game there are 2 different adventures, 7 zones, more than 30 different levels, 20 special missions, sections with the Tornado! You don't believe that there is all of this in only 4MB!!! Download and you will be very happy!!!