Hmm... $90.6 million of net income in 2010? Can it sustain the growth to justify a double-digit billion market cap?
"That could value the game publisher, which had about $850 million in revenue last year, at roughly the same as the two biggest videogame publishers—Electronic Arts Inc. and Activision Blizzard Inc.—combined."
Dont undererstimate the gaming market.
Stocks tend to be valued based on future earnings more than present earnings - after all, if you know that a company will be making more money next year, it's rational to buy their underpriced stock today and wait for it to appreciate.