Pokemon Go is unique because it utilizes the GPS system to track your movement. However, some clever folks have made it possible for the game to be playable on Twitch.
You can check out the action yourself by clicking here. All you have to do is chat and the most votes will determine the next action that will be done.
Twitch plays Pokemon Go is based in New York City. They are playing in Central Park which means there will be a lot of diverse Pokemon for you to catch. It is running on the iOS version of the game.