Last week, Google announced that games like Zynga Poker and Angry Birds would find a home on Google+.

上周，谷歌宣布将在Google+上引进《Zynga扑克》（Zynga Poker）和《愤怒的小鸟》（Angry Birds）等游戏。

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Today Zynga has all the top games on Facebook, including Zynga Poker and the newly launched Empires and Allies.

WSJ: HEARD ON THE STREET: Zynga Wants to Be More Than Just a Facebook Friend

The company followed that game in November 2008 with Zynga Poker for iPhone.

CNN: STORY HIGHLIGHTS

For Zynga, which also owns CityVille, Zynga Poker, Mafia Wars and Words With Friends, virtual tractor sales are big business.

FORBES: How Zynga, Facebook and Groupon's Go-To Auditor Rewrites Accounting Rules