Definetly worth buying. Most of my DS games are short and repetative, however this is a very gd game as there it looooooooads to do on it.
Theres loads of different single events you can choose from and theres also a very long adventure mode.
Well worth the money and ofcourse, its got the old classics mario and sonic on. You can choose to play as about 20 different characters depending on whether you want a character for speeeeed etc.
took this game on holiday with me along with 12 other DS games. Was so hooked to the game that i never touched the others.
There is so much to do and the storyline adventure I still havent completed showing its depth.
The events are brilliant especially the shooting and ice skating.
A good balance of difficulty and I would highly recommend to anybody thinking of buying.