I actually already own this game. Oddly enough, I've never played it since the version I own has a really crappy DRM on it & I've never installed it for fear of screwing up my PC.
Looking forward to actually being able to play a game I already own. :D

well, i'd still be careful. i downloaded the demo for this game and got restart errors from having incompatible Tages Protection drivers that THE STUPID DEMO INSTALLED! and, of course, a game uninstall did not remove them. i had to go search for some tool from the company in order to get rid of the drivers. why the F did i get CD protection with a demo? the demo wasn't from GOG but still, i wouldn't install this game if they gave it away.

The GOG version works fine. I haven't had any problems playing or installing and no DRM errors or bizarre incompatibilities.
Enjoy the game.