Then you should look into website hacking. I would be able to help you with it but i will not give you a ten step to hack a site list. You shall do a lot of research on your own, but look into SQL injection, xss, shell upload, LFI, RFI they are the most used eploit methods for websites. But forget about RFI and LFI for now, they are a bit uncommon now.
I think the important question is: Is it the games you wanting to hack or the site? I suspect your wanting to hack points on the games... try cheat-engine.