Small images of a CD designed to, in cooperation with proper software, deamon tools or alcohol, fool the CD protection into thinking the original CD is in the drice.
Well if it's working with me, I guess so, it was released the day the patch came out..
I wouldnt call it proper, but the game works 100% Perfectly !
What I mean is, when you start the game, it sais you need to insert the correct CD but when you click it again..It's up and runnin'