I agree. Phoenix Wright 4 has a similar effect when it was released. Both PW1 and PW2 got back into the top 50 when PW4 was released (Media Create). They stayed there for a while.
This game certainly has long legs at the moment, hovering above 20th for the last three weeks, going as high as 11th two weeks ago. 700K in Japan is doable. I wouldn't go as far as 800K at the moment. We'll have to wait and see how it does in the coming weeks.
Professor Layton 2 is not coming out for a while, but it will almost certainly boost sale of Layton 1 when it does. Same as when Layton 3 is released.
The biggest unknown right now is a Western release. After the rumour in April, it has been very quiet. Worldwide sale will almost certainly surpass the current prediction should a Western release be announced, maybe as high as a million.
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This game certainly has long legs at the moment, hovering above 20th for the last three weeks, going as high as 11th two weeks ago. 700K in Japan is doable. I wouldn't go as far as 800K at the moment. We'll have to wait and see how it does in the coming weeks.
Professor Layton 2 is not coming out for a while, but it will almost certainly boost sale of Layton 1 when it does. Same as when Layton 3 is released.
The biggest unknown right now is a Western release. After the rumour in April, it has been very quiet. Worldwide sale will almost certainly surpass the current prediction should a Western release be announced, maybe as high as a million.