Last weekend as Ludum Dare 29. I participated, and in 48hours I created FoxyTank!
In FoxyTank you drive around a cave-system fighting other tanks, while trying to find replacement-parts for your spaceship. It’s controlled via WSAD, aiming & firing is done with the mouse.
I also made a timelapse, compressing the 48hours into 2 minutes.
So far reviews have been uniformly positive, and its the 25th most-rated game out of 2500 :)