This is a great game! I remember playing this game way back in the 90s on a CRT, and the graphics were a lot better than the Sega Master System version. It's quite a simple game of just trying to get to the end of the level, and collect the rings along the way. But it's a lot more challenging than you think! Don't forget Dr. Robotnik at the end of every 3 levels, destroy him and you get to move to the next zone!