Old School informed GURPS Dungeon Fantasy gaming. Basically killing owlbears and taking their stuff, but with 3d6.
I like it! It reminds me of the descent to fight Cydea in Diablo 3.
You know what fresh annoyance I discovered today? That because all you Old School types have links to each other's blogs that quote your freshest posts, googling "Circular Stonehell" to see where you found that map is impossible.
But apparently I can just clicketty-click on the image and it's a link to the originator's blog...