OriGin on 27 April 2007
Consider 26th is a thursday and Nintendo games sell better on weekend, I think the sales for Big Brain Academy will raise higher after the weekend, expecting about 50 - 60k for the week.
Monday is a public holiday in Japan also so that's another thing to consider for more weekend sales.
I'm sure it will have some legs, it's not a typical gamer game where everyone who wants it will buy on day one... it'll spread and sell ongoing, like Wii Play (but not quite to that level because Wii Play = free remote).
