Aero88ZFGC is like the Hotel California. You can come in but you can never leave!
An old example of this can be found at gmc.yoyogames.com. I do not know if it is still in existence though.
it was a different one lol, cannot remember the name though.
Back when i was a newbie with GML i made this with help from another person , it's not really good IMO.