>>41351698Mt Moon in Kanto. It might only actually be 3 rooms, but the encounter rate is sky high and you can't even buy repels beforehand
Radio Tower in Johto, a complete slog that is completely free of fun. Also, Whirl Islands, it's fucking awful how there's actually 6 entrances and only 1 is right.
Seafloor Cavern in Hoenn, the fuck is up with the random caves that send you back to the start?
Pretty much everything before you get the bike in Sinnoh. Slow movement, Galactic admins with final evos 20+ levels before they should have them, and not too many interesting pokemon
Iccirus City in Unova1. I dont know why but something about that entire area really makes me not want to continue.
The stretch between Virbank Gym and Castelia Gym in Unova2. Pokestar tutorials dragging on, paired with a dive into the sewers dont exactly make me want to play
The routes where you ride a Rhyhorn/Mamoswine in Kalos. Wouldn't even be bad if not for the tank controls.
The entire second island's first half in Alola is miserable. Roadblocks everywhere, cutscenes still going full force, and a forced Royal Dome that autopicks your first pokemon so i just get BTFO because i had a weak mon out in front to get exp