I really don't imagine they would let people get away with this completely. It seems disingenuous to build a game that you don't have to beat at all.
If it were a "demo" mode, it would perhaps mean that the game shows you what you're supposed to do to progress, but doesn't actually do it.
At least, i hope. Either way, something like that would be pretty cool, so long as the user used it in moderation. I sure as hell could have used something to show me what i was doing wrong with TD Bald Bull. Especially since there is generally a fairly significant gap between showing and doing.
I really don't think Nintendo would completely jump into "games that play themselves" mode.

Monster Hunter: pissing me off since 2010.







