Depends on the game. Some games last only 5 hours so 1 hour is plenty of time to judge the game where as others last for 20+ hours so 1 hour isn't enough to fully judge the game.

With that being said though, you can certainly judge somethings in an hour, just not everything. What the first hour or two of playing should do imo is get you hooked in. If playing for say almost 2 hours and I am still bored as sin and there is nothing to like about the game, imo it is a fair judgement. Cause it really shouldn't take 5-10 hours for a game to get people hooked in. Games are a form of entertainment, I want to be entertained... Not spend the first 5 hours being bored... Whether it be Story or Gameplay or something, a game should be able to get me hooked within the first 2 hours.

Thats like saying the first episode of an anime and you can judge the season. Thats not always the case.

Ni No Kuni for example did not grab me until after like the 2nd hour.

I think I tolerated around 2 hours of it, it was enough to learn that it is an endless repetitive dungeon crawl and a no less repetative dating sim thrown together.

This.

I think tutorials are fine, you can't help that, but I believe you're expecting a lot from the player to trudge through hours of boring/unexciting gameplay or take time to get used to controls or how to play just to get to the 'good bit' of the game that in the first place the player may not even like or enjoy! For me, you have to get me hooked somehow, be it story, characters, premise or gameplay, in the opening hours.

Was about to say the exact same thing.

Oh hell no!

FF12
SO3
Nearly every DQ

Just to name a few take at least 5 hours to even open up!

Depends on the game. Something like FFXV I'd want at least 5 hours to get used to the combat. If it's a game like Vizioneck, after 3 minutes I'd know that was shit, and never touch it again.

OP makes a statement in the title.

Completely disregards it by adding exceptions to it on his post.

Doesn't need to be added much, does it? One hour might be more than enough to judge some games, but not all.

What he said. I have been won over by games that I thought were more boring than church, and in the 2 best examples I can think of FF XIII (PS3) and Marvel Ultimate Allience (360), it took well over an hour.