A big warmup game?

So the Ludum Dare time is getting ever closer, and it’s about time i think of a warmup (we don’t want to repeat last years startup, do we? http://www.ludumdare.com/compo/2013/08/23/a-not-so-good-update-post/ ). But instead of making a short simple game, why not use this time to work harder on a project i have been doing for a while, and build a more limited version of it? It will be a bit bigger than usual warmup games are, and i might not even finish it in time, but let’s give it a shot. If it fails, at least it will be good for lols :D.