Electronic Arts revealed EA Sports Active has achieved worldwide sales of over 600,000 units in less than two weeks.

This accomplishment was announced during the company’s E3 press conference, with EA Sports president Peter Moore declaring the publisher was “delighted by the overwhelming response” to the Wii fitness game.

“This is, by far, the most successful launch of any Wii title in EA history, and even more encouraging is that our second week sales worldwide were as strong as our first week. We are off to a great start at retail.”

EA also announced the game would be followed with a new expansion pack this holiday season, introducing new challenges and activities for current EA Sports Active owners. There will be 30 new exercises, such as curl ups and crunch and punches, as well as a new warm up/cool down feature.

The expansion pack will also feature a Six-Week Challenge mode, helping users to maintain their daily workout routines.