Summary: There is a problem with the game's configuration picking up your graphics card, which has to do with the nvidia optimus technology. The game will try to run on the intel gpu, but won't start because your "setup does not match your system specifications". Basically, there is no way to pick up your actual GPU (nvidia GT555m in my case) and so it will never start. You can read about this on the nvidia forums.
Summary: I saw this game being played and had to try it myself. I must say the first couple levels were really great but then it went downhill really fast. Most all the stages are remakes of original Sonic levels and are nearly spot on. If you enjoy the original Sonic you'll love the beginning. Honestly the following 3D stages were pretty good. Controls seemed to be nearly as good as the original Sonic Adventure 1 & 2.
A great looking and fun, but ultimately buggy experience.
Jarred J. Ibarra "Steel hedgehog", Amazon
8 November 2011
Summary: Sonic Generations is a great game. The voice acting is bad, the story is horrible. But as a game, it is great. Sonic comes in two flavors in this adventure, classic and modern. Classic plays closer to the 16-bit genesis games, with the same move repertoire and sound effects, but compared directly to the older games, feels floaty and stiff. Once you get used to it you don't mind it so much.
Excerpt: Le coffret présente des accessoires sympas et le jeu possède d'excellents graphismes et une bonne maniabilité, mais l'histoire reste un peu bidon, excusez moi, et le jeu est vraiment trop court, pour un héros qui a vingt ans, neuf niveaux c'est scandaleux !