When the game is launched, it is done from a web site where you are logged in (so have a session)
The game needs to be able to access the session parameters to authenticate.
Also, URL parameters migh say what launage to use, or what skin to load.
how does one access & use these?
If they are not accessable, then I cant see how construct 2 can be used to write games lauched by a logged in user.