Enjoyable game, but after putting about 5 hours into it I got bored. A lot of people will easily get double that or more though. And for 10 euros, it's a great deal as all future updates will be included.
The fact that it wasn't in the VGC database doesn't surprise me at all. An Indie Game on the PC is just about the least popular combination you can get around here.
Also, Notch has sold 320,000 copies of this game to date. Impressive.
Demon's Souls Official Thread | Currently playing: Left 4 Dead 2, LittleBigPlanet 2, Magicka