To celebrate the 20th anniversary, Valve got the original Half-Life 2 development team back together to bring some much-needed updates to the game, with the game now being free for the weekend in ...

and two to three before the infamous Half-Life 2 beta that leaked in 2003. It's a distinct point in the game's evolution, with graphical elements reminiscent of both Half-Life 1's GoldSrc and the ...