I think that this is it, Nintendo handheld + home console. So, maybe about 80M, which is more or less the current user base. And I think it's a safe bet, if they're not planning on releasing another handheld, which I think it's pretty much pointless right now. It's obvious that it won't sell 20M like some people are claiming. 80 might be a bit too much, but I think it's realistic. 50M minimum. C'mon, Pokémon games, Mario games, will all come in the same console. No way this could sell that quantity. I'll eat crow gladly if that happen though XD.