From the FAQ @ genesis-mining.com:
"As of September 2014, we provide: Bitcoin, Litecoin, Dogecoin, Darkcoin, Reddcoin, Blackcoin, Feathercoin, Auroracoin, Lottocoin and Megacoin."
Expect more coins to follow (GMCoin? MegaMikeCoin?)
I also think that Genesis should add more coins on their list and I hope Genesis will add only those coins which have high profitability level.