My warmup game is TicTacToe. A few points of interest:

* My son did the sound effects.
* It's implemented in Haxe/Flash/Starling.
* The A.I. is simply random selection.
* It uses my GamePad input class.
* There's an Ouya version!

I'm glad I did the warmup since this is my first Ludum Dare and I am unfamiliar with the submission system.