This game could do 100k without any problem, yet. If it really picks up, it could do 300-500k
Never discount a Wii game on its first week sales. Also, with such low sales, VGChartz are more often off than not.
You cannot really say if this game bombed or not until week 10 the earliest.
See Stof's Wee Tiny sales thread. Or whatever it's called...
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