On Monday of this week, Electronic Arts acquired social gaming startup Playfish for at least $275 million in cash, with extra bonuses in the future depending on the company's success. Then on Wednesday, Playdom announced the closing of a $43 million round of funding on a $260 million pre-money valuation. If that is not enough to convince the world that social gaming has arrived, then consider that just one day after the Playdom news, another social gaming startup has closed its own round of funding.

Wooga, a Berlin-based social gaming startup currently focused on designing games for Facebook, just announced the closing of €5 million (about $7.5 million) in new funding. Balderton Capital led the round, with support from previous backer Holtzbrinck Ventures.

Though the amount of the investment might seem small when compared with Playdom's recent funding and the price paid for Playfish, Wooga, which launched in January of this year, released its first and only game, called Brain Buddies, just four months ago. According to Wooga, however, Brain Buddies has already registered 6,000,000 players in over 200 countries and is currently listed in Facebook's top twenty titles. The company has logged over 500 million minutes of game play since the game's launch.

Clearly, Wooga is on its way.

Besides Brain Buddies, Wooga has two new games approaching completion which will be announced in the coming weeks.

A 25-person team, Wooga will use its new funds to make some more hirings and to expand the company.