What site has a download for a pokemon game that is like the pearl and diamond, that let's you play with ppl?

like the games for the nitendo ds, pearl and diamond...where you can get the sinnoh dex and play the actual pearl and diamond games online, like pokemon stadium...sort of, only i want to download this and play with world wide people...or if you can tell me a site besides: pokemoncrater, and pokemon tccg; please tell me...|||I'm sorry, but they simply do not exist