Wich code is used to create a flash game online ? I meant a little flash game, played with 5,10,20+ players in the same time and all together in the same party.
Well, if you want it in the browser, you will probably want Flash. Once you get Flash, you'll need to become advance in actionscript. After that, you will need to learn java and become advanced in that. Then you can begin by creating a socket server in Java to communicate between multiple flash clients. After you get the hang of that, you will need to buy a dedicated host so you can have it online. Then you can start building your first online game.