Atlus and developer Nordcurrent take the 101-in-1 Megamix concept from the DS to the Wii, with 101 mini-games that should completely satisfy your need to play mini-games for the rest of your life.
Seriously, this should do you until the end of time. 101-in-1 Party Megamix for the Wii features a metric ass-ton of games that you can play with family and friends, all for the price of $19.99 worth of coffee. Having not played even one of these 101 games I cannot vouch for their quality, but there is a game with a rabbit skating on train tracks collecting carrots, so that alone should be worth the price of admission, unless you are discerning.