If it's not Captain Underpants, may it be Mad World.

Quite possibly the only other game I'll enjoy as much as NMH this year for the Wii.

I'll go for Mad world too....

They talk about Mad World in the issue this teaser is from so it is something else.

better be EXTREME!!!!!!!!!!!!!!!!!!!

Mario World War

Must have missed it.  I assume they've reported on the Conduit already?

If it they have then other possibilities include:
COD: WaW

What was the game that the moon was teased about? I remember the thread with all the guesses but I don't remember what it was.

They have not said anything about the Conduit yet so that is a possibility and it might be COD.

It was Castlevania: Order of Ecclesia for the ds.

Castlevania: Order of Eclessia. I was right, but for the wrong reason (evidently, they made the logo microscopic, and jammed it in there somewhere).

Edit: Beaten like a horse at a derby.