they do take ALOT time into planning the game. The games are often very unique and all the dungeons and riddles have to be thought.
Making a Zelda game is easily compareable to making a GTA game.
That doesn't strike me as a particularly apt comparison. In terms of sheer scale, these games are very different animals. And Zelda dungeons are, with very few exceptions, not exactly complex, or even particularly deep; they aren't bad, but they're pretty simple overall.
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