A great remake of the classics!
version of the original really had some extras that the originals didn't.
First, the story is interesting. You have sonic of course, going through the stages, collecting chaos emeralds and progressing the story. You fight a boss at the end of the second stage, but the boss and environment are 3-D! Pretty cool twist I think. The main stages are mainly 2-D, but the characters are 3-D like on the gamecube. Then, you have mysterious blaze the cat, who is the guardian of the Sol Emeralds fighting a second eggman!(play the game, you'll see). Her stages are the same as sonic's mostly.
The graphics are very well done for a sonic handheld.
The environments are fresh and the music is pretty catchy at times. You can dash through loops, run down hills, and when you go high enough in a stage, you transfer gameplay to the top screen automatically. Same goes for if you go far enough down in the stage, gameplay swithces to the bottom screen. Very clever!
Only problem is sometimes you go too fast and bump into enemies without time to react, and some of the last levels are hard but those are the only downsides.
I would recommend this game for people who like simple, but fun and fast games. Enjoy!