It just makes good humor and fun to roam the really colorful world and to go through a bombastic designed level to the next. The speed is breathtaking, skill and good reactions are in some places is a must. Lovers of Platform Games get their money and also Geschwindikkeitsjunkies will have fun!
The skills that gets Sonic through the small "Wisps" are, were really done brilliantly and allow a more sophisticated way through a level. It is also worth at a later date to repeat a graduated level because you can discover something new again and again. It is never boring.
The story is made quite nice, many small gags and itzige cutscenes complete the picture.
A very successful game, and for Sonic lovers anyway a must!
Thank Sega, for wonderful hours on the Wii :)