I've just beta-tested Infinity Online, though the things that there was no "world" (only rooms with missions) + lack of content (only 3 missions in CB) didn't encourage me to play it more. Still, when it's going to become OB, I'll check it again.
PM me if you need information on how to get CB key.
http://www.gametribe.com/gt/infinity.do
PS. I hope you live in Europe... there are IP blocks for all except Europeans.