For me, the last two main Zelda games only sold very well because of their sandbox approach full of possibilities.
I think Ocarina of Time will only surpass 20 million if they drastically change the structure or if people buy it thinking it's something else because of the marketing. This competition with GTA created on Twitter doesn't make sense,at least here in South America, GTA is 10 times more popular than Zelda, especially among young people.







