[EricH]

My analysis:
The water: We can't see the game clearly.
The banana: Dave is saying that our minds will slip up on figuring out the game again.
The blue robot: The game will involve robots.
The light bar on the robot (connected to the "hint" at the Championship): Red vs. Blue, with green target lights.
The fish: Dave is throwing us some red herrings.
The blue line: Random item to throw us off.

By the way, this is a still from the 2006 animation, modified to give a bunch of "fake hints".