If you meant games that can be played on the net ptfiles is good. They have a lot of arcade games and a lot of interactive games as well. You can also earn upload credit playing those games. Other sites have games like betting / blackjack where your upload credit / points are used.

If you meant a site to download games to your pc then BCG is the best site.

I also have an invite to ptfiles so if you need one pm me with your email address. You can find invites to BCG on their invite channel.

Hope this helps.
Good luck.