Fancy replaying the classic Half-Life like you've never seen it before, and for the fantastic price of absolutely free? After literally years of waiting, Black Mesa is finally available, so, get downloading, and relive the epic trials and tribulations of Gordon Freeman all over again.
Just head on over to the Black Mesa site, which is taking an absolute hammering right now, as you can imagine, to grab the download. All you need is the Source SDK to run it, which you can either grab through a Steam game purchase like Portal, Half-Life 2 or Team Fortress, or download it free direct from Valve.
If the trailer above is anything to go by, this will be absolutely awesome. Half-Life Source, the way Valve should have done it. [Black Mesa]