Also, take a look at the new and innovating HunterCoin (HUC) - it's currently about 2 weeks old, but is enjoying a suddenly rise in valuation due to its 'game' element. It incorporates a sort of MMORPG with a concept of 'human mining' and is in active development. This could be the foundation of a new gaming paradigm.

See:
https://bitcointalk.org/index.php?topic=435170.0
http://bitcointalk.org/index.php?topic=300538.0

It currently trades on poloniex.com - where atm, it's .00185BTC per HUC. Because it takes 1.05 HUC just to 'play,' HunterCoin has its own built-in demand-utility.