It has an exciting story which can boast with many cutscenes and good speech.
The magic tricks that belong to the gameplay and keep coming up are also a nice feature.
For Collector Edition:
I am a friend of well-appointed CEs but Grey Matter is one of the rather meager. The playing cards are nicely decorated and certainly a looker if you so showing off a few card tricks. But the mini-posters and artwork postcards can not inspire me, as it in some games in the standard version is better pack (Witcher 2). The soundtrack is well done and fits very well with game, but I do not think I will ever put the soundtrack CD in the player, because it rather only loose "Hintergrundgetüdel" is.
All in all I'm satisfied with the purchase and the normal version of the game I can fully recommend to all adventure fans.