Now that Killzone 3 players can get online and kill each other once again, Guerrilla Games and Sony gives them incentive to do so in the form of a double XP weekend running now through 10AM UK time Monday morning.

Those of you not busy hating on Call of Duty should probably stock up on the caffeine, as the second Black Ops Double XP weekend runs now through 8am Monday morning, spanning all three platforms.

Tired of slow progression in NCsoft's latest MMO, Aion? The developers feel your pain, and they plan to assuage it with regular double experience weekends, starting with the next three weekends in a row.

World of Warcraft isn't the only game turning five this week, with developer Guerrilla celebrating five years of Killzone all week long at Killzone.com, culminating in a weekend's worth of double XP goodness.

NCsoft is throwing open the gates of the City of Heroes to returning players next weekend, with double experience on tap for those with a bit of time to kill bad (or good) guys.

As we mentioned last week, this weekend is a special double XP weekend for Call of Duty 4: Modern Warfare players, though now it's now an Xbox 360 only weekend, with PS3 fans most likely getting the treatment a week later. Also exclusive to Xbox Live is a special half price sale on the Game of the Year Variety map pack. The pack will be slashed from 800 Microsoft points to 400 from 12:01am Pacific on the 12th to midnight on the 14th, which coincides with the double XP event. Honestly I can't see how anyone still playing Call of Duty 4 doesn't already have this pack, but it's a nice gesture.