Credit to this Reddit post by u/Aligatueur, and commenters below who added games. Went looking for some of these to play myself, figured I'd post the resource on Lemmy too.
- https://statle.fun/
- GPX+ (Global Pokédex Plus) : https://gpx.plus/
- PokeFarm : https://pokefarm.com/
- PokeHeroes : https://pokeheroes.com/
- PokeIdle : https://pokeidle.net/
- Pokémon Hatching Center : https://richardpaulastley.github.io/PHC/
- PokeClicker : https://www.pokeclicker.com/
- DelugeRPG : https://www.delugerpg.com/
- ~~UnovaRPG : https://www.unovarpg.com/ Closed.~~
- Pokémon AutoChess : https://pokemon-auto-chess.com/
- PokeGen RPG : https://www.pokegenrpg.com/
- Pokémon Plasma : https://pokemonplasma.com/
- TPPC : https://www.tppcrpg.net/
- Eclipse RPG : https://eclipserpg.com/
- Pokémon Vortex : https://www.pokemon-vortex.com/
- Showdown : https://play.pokemonshowdown.com/
- TCGOne : https://tcgone.net/
- Pokemon TCG Simulator : https://pokemonsim.com/
- ~~Pokémon Rise : https://pokemonrise.com/ Closed.~~
- PokéBox : https://pokebox.net/
- PokeExp (French only) : https://pokexp.com/
- virtuadopt : https://www.virtuadopt.com/
- Pokémon Clicker (little game) : https://www.mtchs.org/wp-uploads/StudentWork/ClickerGame/
- Poliwager : https://poliwager.net/
- The Pokemon Kingdom : https://tpkrpg.net/
- Pokerogue : https://pokerogue.net/
- PokeDoku : https://pokedoku.com/
- Pokedle : https://pokedle.com/
- Pokengine : https://pokengine.org/
- PokeNexus : https://poke-nexus.com/ (Previously Pokemon Planet)
- PikaGame : https://hackedcrusade.itch.io/pika-game
- Pokemon Creed : https://pokemoncreed.net/ (Non tested)
- Pokemon Dusk Reborn : https://pkmnreborn.com/ (Non tested)
- Pokemon Comet : https://pokemon-comet.net/
