After selling over 2 million units in Japan, Nintendo's innovative exercising video game was finally made available in the U.S. on Monday at the Nintendo World store in New York while the system will be distributed all over America beginning May 21.

Combining the skills of a personal trainer and the fun one gets from playing video games, the newest Nintendo product measures the user's body mass index and sets players on various workout routines including strength training, aerobics, yoga, skiing, and snowboarding, all while sitting in front of their TV.

"Wii Fit will get you moving whether you've been playing video games for years or this is your first time," Cammie Dunaway, Nintendo of America's executive VP of sales and marketing, said in an announcement. "Wii Fit is easy for anyone to try and is yet another example of how Nintendo continues to expand the world of video games to new audiences."

Besides a CD, the $89.99 game comes with a hefty balance board that wirelessly communicates with the required Nintendo Wii Console. Measuring 20.5 inches by 13 inches by 3 inches, the board which is basically a complex floor-based game controller, senses the user's weight as he steps on it and uses the information to control and synchronize the onscreen games and exercises designed to improve your balance, posture and fitness.

Today's launch of Wii Fit featured a demonstration from celebrity trainer Ashley Borden, who afterwards concluded that it's time everyone must "get on board and get excited about their fitness." Other fitness trainers have noted that the game is indeed a really good idea, especially for those who often feel embarrassed in a traditional gym.

However, in spite of major positive response from the users, the game wasn't spared some controversy after a father from the South-East complained that after playing the game, his stepdaughter was labeled fat. According to him, she is perfectly healthy, solidly built but not fat. It caused her devastation and he and his wife had to work hard to convince her that she wasn't fat.

According to Tam Fry, from the National Obesity Forum, the game should display a warning for parents and children shouldn't be allowed to play because its BMI measurement is misleading. Also, children's BMIs can change every month.

In response, Nintendo issued an apology addressed to all customers who felt offended by the game, but refused to put a warning on the game.