[Techtaffy Newsdesk]

American Express and Zynga have launched the Zynga Serve Rewards, a new program that is tied to the Serve digital wallet. FarmVille allows players to cultivate their farms by plowing, planting and harvesting crops and trees. As part of the Zynga Serve Rewards phased program, FarmVille players now have the ability to plant an interactive Serve Money Tree in their Farms which will give them the ability to level up in game and earn Zynga Farm Cash for virtual awards redemption.

Later this year, the Zynga Serve Rewards program will include new kinds of loyalty incentives, tying everyday spend to Zynga’s Game Cash in ways that go beyond the initial first five purchases of $25 or more, says American Express.

Similar Zynga Serve Rewards programs will be introduced in additional games such as CastleVille and CityVille over the course of the year.

[Image Courtesy: American Express]