You can sign up and play up to 4 games at a time for free, otherwise a year membership is $25.
I assume many of you will enjoy this game because who doesn't like trying to PK?? Also, it's all browser run so you can play it from work as long as it isn't blocked. You have 24 hours to take a turn so it doesn't require a lot of time commitment.
I made a few games for people who want to test it out. Password is wolveryeti.