If I recall correctly, iLol is recognized by League of Legends. They don't build it but they accept it.If they made a Mac client, I'd totally buy RP (I caved and bought one for college)
The engine they work on doesn't cross over so well, and so the client they had made to work on Mac's was constantly glitching & required too much maintenance to upkeep.Oh right. LoL was working on an OS X client but they stopped for some reason. I know a lot of games worth playing through that aren't available on OS X.