How can I get better organic traffic into my arcade site?

I've done traffic exchanges, directory submitting, SEO, article writing, E-mail refering, premium link exchanging. So far link referal has helped the most. It grabs about 20 uniques a day if I spend 10 minutes on their site, but I'm out of idea's. Since google is updating their Pagerank soon I need to really get noticed quickly. This is a serious question, but is there anything else that I can do that will easily bring in organic traffic?

What is a VPN?

VPN is (Virtual Private Network) were first used by companies to enable their employees to securely access internal systems such as email remotely (e.g. from home or while on business trips). Today they are increasingly being used for personal use by individuals to protect their privacy while online in public places (e.g. when using the wi-fi connection in a cafe) or in a country where the internet is censored / blocked (e.g. China, Saudi Arabia��).