Hii!
Dondokomon is a Pokémon fan-made roguelike I've been building solo. It covers all 9 generations, with Gym Leaders, rivals, an Elite Four, and an infinite-loop endgame that keeps throwing tougher trainers at you until your team finally can't take it anymore.
Runs directly in the browser, no install needed. Link: Dondokomon
Screenshots:
Give it a try and feel free to drop feedback, bug reports, or ideas, this is very much a work in progress and I'd love to know what you think!