@ Kamil: The way I see it, you can't judge WiiFit vs any game out there. This is a different animal altogether and will appeal to an totally different group primarily.
While many gamers will get it, I see it's main market to be women and mature people who want to stay in shape but are too lazy to work out. How many people do you know who have dropped $500 or so for a treadmill or other exercise equipment, used it for a week, let it collect dust for a year and then sold it, often to repeat with gym membership or other fitness thing later? I know a lot. This will win over that market cause it's fitness, it's fun, it's not expensive comparitively to gym membership or treadmills or whatnot (even with Wii cost factored it), and they'll feel it'll get them to do what they want to do but always put off because it's not normally fun.
In the end I figure most of these people will still use WiiFit for a limited duration (but better than treadmills, etc) and then it'll either collect dust or they'll buy WiiSports or DDR or something else to 'try again'.







