Start-up Row Sham Bow is one of those studios, and Woodland Heroes is the first game to experience the power of Zynga's cross promotion machine. Woodland Heroes now appears above other Zynga games on Facebook in what the company calls the zBar, or the marquee-type feature that rests above all of its social games. The idea is that players will notice Woodland Heroes above, say, CityVille and click on it to see what's up.

And according to Zynga Platform Partners head Rob Dyer, this is just the beginning for the promotional tools at hand to make sure Zynga delivers on its promises to third party social game makers. And even with 292 million monthly and 65 million daily players, Dyer knows that there's plenty more work to be done if Zynga truly wants to deliver.

Driving players to try out new social games is one thing," Dyer wrote on the Zynga blog, "but the trick is making sure they stick around; that's where some of our upcoming tools to increase social engagement come in."