Wii may be king in Japan (see related story), but in the United States, Microsoft’s Xbox 360 is on the top of the gaming console heap.

The company that Bill Gates built announced yesterday that its Xbox 360 game console mopped the floor with Nintendo’s Wii and Sony’s PlayStation 3, selling more than 10 million units in the United States.

“History has shown us that the first company to reach 10 million in console sales wins the generation battle,” Don Mattrick, a Microsoft senior vice president for Xbox development, said in a statement.

However, it should be noted that Wii is closing in fast on that lead with its impressive 8.8 million units moving off store shelves in the U.S., and Playstation 3 lags behind with only 4.1 million sold by comparison.

Microsoft also holds the record for global online gaming membership with over 12 million subscribers for its Xbox Live online gaming service.