There are two versions of this game (download and physical). The downloadable version is the only one being sold in the US, and this version requires registration at the first run of the application. After a successful install of the downloaded version, I start the game and it immediately comes up with a "page cannot be found" error. This doesn't happen when installing the game in Windows. If anyone has more details on this issue please post.
EDIT: Just to clarify, this registration issue does not affect the version of this game found on the physical media (since no registration is required).