The longest is FFTA2: Grimoire of the rift. And i don't think TWEWY is hard, i even can defeat the last boss with normal mode on first try : Maybe because most players use positive pin? :-\ Since all of my pins are negative(mind the partner too). The hardest is FF3, WHAT THE! STINGY EXP!
Panthera Cantus on Ultimate, Level 1? Hate to say it, but I've done it with hardly any effort. That said, it took forever to do, and it gets difficult to maintain concentration for that long.
I would say that the most difficulty NDS game would be Trauma Center 1. The missions leading up to the final patients are not hard and can beat pretty quickly, however the last patients with the GUILT strain are more difficulty than any other thing that I have ever seen on a video game. miros
30 hour is nothing a very long game takes you hundreds of hour XD depends how you go deep in the story and if you want a 100% finished game XD
Why are people saying TWEWY is hard? It was a breeze for me, and I'd often choose the hardest modes for more profit and such. Then again, I haven't beaten the extra part after the end yet. Err, dunno about hardest, but longest would be the visual novel games, most notably Phoenix Wright. It'd take AGES to solve a case, maybe because my logic isn't the best >.>
Twewy isn't very hard the difficult was in evolving certain pins using wi-fi connection... since i didn't know lot of person who have DS about FFIII is the one where you can't buy revival item?
hhmmmmm..... so much are talking if phoenix wright and TWEWY.... but i think final fantasy tactics A2 grimoire of the rift,digimon world dusk and dawn , harvestmoon rune factory 2, kingdom hearts 358/2 day, and dragon quest monster joker was the hardest game ever been i play..... i play it was more than 30 hours on the game records... don't you think so??? if some games in my list is very hard don't you???
Longest? Pokemon Platinum, so far. I'm was just at my third badge, but I'm already a good 10 hours into the game.