Tell me where to play on the Internet with bonuses and without problems?

My boss gave me a really boring task to do today and I needed a little break every now and then to keep my sanity. I wanted a game that was quick and didn't have too many distracting flashing lights. I opened Simple Mines and it was exactly the kind of minimalist fun I was hoping for. For the EN community they provide some great deposit matches and the gameplay is very fair. It really helped me get through my workday and I felt much more relaxed.