I mean I hit the time cap in Pokemon Platinum so it'd probably be that on paper, but the most fun I've had from any Pokemon game was actually Pokemon Ranger 2. The game that closely resembles the experience I had with that are the newest titles, Scarlet and Violet, but I still don't get that feeling of going on an adventure and using Pokemon to either help me solve puzzles or navigate around the world. But it's just ALMOST there and perhaps one day I'll see a monster game where I feel truly immerse with the world and these funky creatures.

But anyway, my favorite region is Alola with Hoenn being second. I love the Alolan islands to a massive degree and I could gush about their Pokemon and how they feel lived in with the region for hours I'm not even kidding.