RE Exiting: Our launcher will start / kill games. You can add an exit in your menus if you want, it'll just bounce back to the launcher.
@werlkjh It may be difficult at this moment as the machine is floating around being painted and the final public prep is being done. We're going to try running every submission and if any issues pop up we'll let you know.
RE: Mouse cursor. I don't believe we plan on suppressing the cursor in any way so it if want it hidden / visible, that'll be on the developer's side.
It's arcade-grade heavy. 3 is tight but doable I think. Depends on who's playing I suppose.
If you're working with Adobe Flash, be sure to either capture or surpress right click.
Updated the diagram to the finalized control layout. See rules page: http://sixpackgamejam.herokuapp.com/Rules
So I got around to uploading the button mapping. See the new diagram on the rules page: http://sixpackgamejam.herokuapp.com/Rules