Yes, Super Friends... it's that time again.
You now have one month to make a game that includes some sort of level-editing component, along with some mechanism for sharing levels. It's not nearly as hard as you think.
A "level" can be anything. A "game" can be anything. An "editor" can be anything. Just make something.
Check out Mr. Lavelle's advice and some more helpful info here.
Good luck!