With the Stimulus Package map pack now available for purchase for the PC version of Modern Warfare 2, it's apparently time to celebrate with yet another free weekend of play on Steam. The PC game download service will let folks who have yet to play the Infinity Ward first person shooter play online for free.

There's no word yet on exactly when the free weekend of play will begin or end but Steam users can go ahead and pre-load the free version now in preparation for when it goes live. Remember, Modern Warfare 2 PC owners get double XP when playing the game's multiplayer modes from now until May 9.%
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