[TeknicllyInsane]

Here's an interesting theory about the game.
If you look at the past two games, we see that last year's game involved a ball, and the year before used triangles. This can be connected to the FIRST logo, which is a triangle, a circle, and a square.
If we follow the pattern, the game would logically involve some sort of box.
this box may somehow represent a goal of some sort, possibly pentagonal.(this would explain the 5 and the diamond)
I believe that the blue background is not water, which is a common belief, but either a light effect to throw us off, or simply the background of the Demo Video. (it has been suggested that the clue is a still-shot of the Demo for this year).

these are just a couple suggestions, not that I expect any to be true.
(i'm the one who thought that last year's game would require digging, due to it's reference to a "shovel's show" )

P.S: these views are not expressly mine, yet a collaborative work of my peers at Birds Of Prey.