I am having many problem when i am downloading a game from this site. some games are not running when i asl ohave the rquirements of that game in some game mouse is not working though the applicatin is running . and i also wan tto also that what is .net framework.

If you need to download the .Net Framework, you can find it here. As for other games on this site that you have problems with, just make sure that your computer meets the minimal requirements listed. If you still have problems you could send a Private Message to the creator of the game and talk to them about your problem. What are you having problems with right now, which game?