From my understanding its similar to an eggdrop in that it runs on a shell and joins an irc channel. The idea being to idle and get points for idling the longest. Battles also exist whereby time is the penalty (or prize). If your version runs on linux, it should work fine on polarhome.
sorry i forgot to add a link :p
www.idlerpg.net sjaz has it right; its an irc bot written in perl which creates a game in whic players idle in a channel. players gain levels based on their idling time and are penalised for speaking, parting, quitting, etc. it sounds incredibly lame and boring but once you get a few of your friends playing it becomes pretty competitive