To play on Pokemon Showdown Simply click on the link:http://play.pokemonshowdown.com/
Press play at the top right, Build your team, select your tier and have fun! ^^Pokemon Online
To play Pokemon Online follow this link: (Beware of Fake download button Ads)http://pokemon-online.eu/download
Follow the set-up wizard and open the application to start playing. It's even available for Android! The source code can also be downloaded and compiled for Linux systems.Wi-fi
Buy a DS/3DS and a copy of a Pokemon game (generation 6, 5 or 4).