Wannabehero won this month's lite challenge compass (and a $40 voucher from Profantasy) with his entry 'Watery Cavern'. The challenge was:
to create a greyscale, top-down dungeon tile, consisting of 15 100px-squares per side (so a 1500x1500 pixel image). Each of the four sides should have a one-square opening in its center (for attachment to other tiles), and solid walls should be solid black.
The entries were of a very high caliber this month, with the final tessellated combination looking especially good! Here's a small version of it, but be sure to check out the full sized version here.
You should also check out the WIP thread for Wannabehero's winning entry here.