Treyarch is also getting in on 4th of July celebrations in the US with a double XP weekend event for the PS3, Xbox 360, PC, and Wii versions of Call of Duty: World at War. This isn't restricted to the US too; it's worldwide. The event will kick off on July 3 at 10 AM PST and will run until July 6, 10 AM PST.

On the same day as the double XP event starts, there will also be a playlist update to incorporate the Map Pack 2 maps into the main Core and Hardcore rotations. The Map Pack playlist will still be open for those who want to play only on the Map Pack 2 maps, though.

PS3 gamers will also get to compete with other games in the PS3 Weekend Warrior (no relation to our own WWs) Competition over the weekend. The schedule's below. You can check out a list of prizes here.

• Friday, July 3 at 12:00pm - 06:00pm PST
• Saturday, July 4 at 12:00pm - 06:00pm PST
• Sunday, July 5 at 12:00pm - 06:00pm PST

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