Well all I can tell you is that all of those games play as good if not better on Windows 8 x64 Pro than they did on Windows 7 x64. What is the exact error you are getting while trying to play Darksiders or the other games? Are your drivers up to date? What about DX? It would help to know what hardware you have and what errors you are getting.
As for gaming Windows 8 will handle everything that Windows 7 did and most times even better. If your system is uptodate with good hardware Windows 8 will work great. And there is no need for to post asking the same question with different wording.
it won't run....i click the application(the game) and nothing happens....