Killzone 3 celebrates its one year anniversary this week and to celebrate Guerrilla Games has announced that the full multiplayer portion of the game will be heading to the PlayStation Store as a standalone download next week. This is one birthday party everyone can be a part of.

In a blog post, GG states that Killzone 3 Multiplayer will include “Guerrilla Warfare, Warzone and Operations game modes, as well as the original Killzone 3 maps AND all Killzone 3 DLC maps.” Best of all, it will be free for everyone up until the rank of Sergeant I. After that, it’ll cost $15 to unlock the full multiplayer experience (along with four exclusive trophies too).

As an added bonus, those who do purchase the full game will be treated to a 24-hour double XP bonus, 3 free unlock points, the ability to set up clans and custom games, and access to the Botzone mode to help hone your combat skills.

If you already own a retail copy of Killzone 3 and feel left out, don’t worry because the following weekend from March 2 at 17:00 PM UK time until Monday, March 5 at 10:00 AM UK time will be Double XP for all.

Happy birthday Killzone 3. We couldn’t imagine celebrating any other way.