Epic has announced that Unreal Tournament 3 Black - a package comprising of the full game and Titan expansion pack - will be free to download and play via Steam starting tomorrow Thursday and through the weekend. Those interested in taking part can start downloading the files now from Valve's Steam digital distribution service so you'll be able to play it the moment the free play period begins.

You may remember a similar promotion was available for two weekends in March to celebrate the release of the Titan Pack. Back then, the number of simultaneous players rose by over 2000% and the game was pushed to the top of Steam's bestseller list. Epic also told players who already own a retail copy of Unreal Tournament 3 they can enter their activation key into Steam and download the extra content for free - as it has always been.