Well Mario and Smash will each sell 3.5-6 million in the US alone, and Wii Play should eventually do 10 million in the US alone (assuming they don't replace it with a similar controller pack-in). Metroid could do as much as 2 million in the US. I guarentee they'll be other million sellers, though.
Super Paper Mario is over half-way there already, and it should show some legs--currently doing almost 30K a week. WarioWare could yet reach 1 million as well--at 550K and doing 10K a week, so it may be on target to hit 1 million sometime in 08. Games like MySims, Wii Health and Wii Music could go either way--they could be multi-million sellers, or stop short of 1 million. Big Brain Academy eventually did 1 million on DS, and could repeat, though not until 08. I'm not sure if Mario Strikers will be a hit in America, but a few past Mario sports games have done 1 million in America, and the GC game never really had a shot, yet shipped 430K... Mario Party 8 should sell 1 million, just as #1, 2 and 4 did, after a 140K first week. Guitar Hero III is probably the multiplat game with the best chance at 1 million.
And there could be a surprise, too. With the growth of the install base certainly to 6 million by year's end, million sellers should start coming faster and faster.
"[Our former customers] are unable to find software which they WANT to play."
"The way to solve this problem lies in how to communicate what kind of games [they CAN play]."
Satoru Iwata, Nintendo President. Only slightly paraphrased.
