I am making a game that is built around going as fast as possible. I just wondered if there was a way to store the best times online and display them in the game. I might also make a level editor.
Online multiplayer is not currently possible as Diana mentioned. Local multiplayer is possible.
I think you could use the kongregate extension for scores if you are going to host on Kongregate, otherwise if you have a server or are using an API for scores yiu could use the Network commands, but they are super advanced and it will take some time to build out.