Creating an addon named Pong
It will be a 2-player game, like the arcade classic Pong.
Both players need the addon to play together
It will use whisper and battle.net channels to do the multiplayer communication (yes I know there is a message limit, but the limit is fast/large enough for my addon)
here's how it will work:
1) you will ask another player to play a match. This can be done by right clicking on their portrait and selecting Pong. Or maybe i'll have a box where you enter their name, or you can just target someone and type /playpong or something.
2) if they also have the addon, they will get a popup with your challenge request.
3) it'll have a simple game of pong. you will control your paddle actively with W and S