Last year, Zynga worked with Dr. Dre to release a track through their Mafia Wars game, but this is the first time the company has received exclusive material.

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In the game, people can choose from one of the five mafia families to join.

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Texas HoldEm Poker and Mafia Wars were its initial successful games, but FarmVille later became the game that dominated headlines.

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One reason Mail.ru has been so attractive is not only its 75% share of the growing market for internet users in Russia, according to Comscore, but its 2.38% stake in Facebook, 1.47% stake in Zynga Game Network (the company behind the social networking games Farmville and Mafia Wars) and 5.13% of Groupon, the online voucher company that Forbes recent featured on its cover as the fastest growing company ever.

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