even if they stopped bundling it right now it would probably still become the best selling game of all time. It would probably sell at a 50% attach rate WW, the attach rate would slowly go down over time but it would sell strongly for the entire life of the system. I expect 4 years from now wii sports is still in Japan's top 50, probably 20-30.
currently playing: Skyward Sword, Mario Sunshine, Xenoblade Chronicles X