The copy protection has been completely removed with patch v1.1 for the DVD version. Digital download versions retain the copy protection. -- Wikipedia
I played the demo, thought it was pretty good. But they were having a lot of trouble at the time with the servers that were supposed to authorize your copy of the retail. So I just let it go by and never looked back. The Tages DRM as they have it set up is very restrictive. There is a 3 activation limit. After that you have to call Ubisoft and get your nose brown.
I liked the game. But right now it would be the DVD version, but only if it turns out to be true that Tages is removed with patch 1.1. Wikipedia has been wrong before.
Hmmm ... well, I liked the game but it was a bit obscure to me what was needed to build which and where you needed a road and where you did not.