Now you can finally justify the extra dollars you spend on those Collector’s Edition versions of your games, as Activision today announced that those who bought the PC and Xbox 360 CE versions of Call of Duty: World at War will be able to earn double experience points from online multiplayer from December 5 through December 12.

PC gamers will need to have activated their copy, which is done automatically as the serial code is entered during installation; any server will offer double XP. On Xbox Live, you will need to play on the “Officer’s Club” playlist for double XP and must have registered on the official site and then downloaded the accompanying token.

Those who bought the regular-priced version will not be eligible to participate in the event.