EA Sports president Peter Moore has announced that EA Sports Active has sold 600,000 copies globally since debuting on May 19.

Referring to the product as “a new platform,” he said that sales of the game were just as strong in the second week of availability as the first. "This is, by far, the most successful launch of any Wii title in EA history."

He also revealed that the title’s first expansion pack is in development and will be available this holiday. Designed to work with the product just released, it will feature 30 new exercises and activities that will bring "more challenge and variety," Moore said.

"New to the EA Sports Active expansion pack will be an emphasis on core exercises including curl ups, crunch & punches, and a warm up/cool down feature," the company said in a press release. "Sports activities will include step aerobics, an obstacle course, squash and water skiing, while a new emphasis on combinations will populate the upper and lower body exercises. An all-new presentation will bring users to the tropics and will immerse them in warm weather activities in a picturesque setting."