The HL2 code that leaked out, contrary to urban-legend, was never complete enough to actually run. A "Jurrasic-Park" style HL2 was created (by another total loser) from original code and the -stolen- HL2 code, to make a buggy peice of shyt.
We can all thank the losers who stole the code for the constant delays in shipping, and those who search-for and download that code for making those people popular. We all know how right and wonderful it is to have stolen the code wrench the release. Thx.
Anyway, for those of us who HAVE gotten a chance to play the REAL Half-Life 2 (we know who we are, *wink* lucky *wink wink*), our lips are sealed for pure lack of words to express.
Oh...and yer gonna want to get a new proc and mouse for this one folks. It's gonna crunch numbers like a numeric-crazed psychopath, not to mention put a few cramps in your hand through the hours you'll be stuck to your PC.