I just participated in Ludumdare 22 and made a game 48 hours. The theme was “Alone”, and I made a simple Minelike.
You can download the game from here:
The controls are a little klunky. I think if I was doing it over again, I would have abandoned any attempt to allow free-pixel movement, and I would have instead bound all movement strictly to the grid.
I also recorded a timelapse video of me making the game, at a rate of 1 screenshot every 60 seconds (not including the times I hibernated the computer when I went to sleep)