HOW DO U DOWNLOAD THIS GAME IF IT IS 1 OR IS IT ONLY A FORUM PLZ SOMONE ANSWER!!!

What do you mean? Quest? Quest's not a game. It lets you play games. QDK, the visual editor, lets you edit games to play using quest, and you can also code them for cooler stuff when you're playing, and you can download it from the main page, under the words Quest, on the sidebar, and it should say "download" or something like that.