The Castle Doctrine
The Castle Doctrine is a massively-multiplayer game of burglary and home defense. It's 1991, and things are bad. You're a guy with a house and family. Other players are coming to take what's yours. Build security to stop them. Study their houses, buy tools, and break in to take what's theirs. Everything you do is permanent.
I'm Jason Rohrer, and The Castle Doctrine is my 10th game. It's a bit hard to describe, because there's never been anything quite like it before. It's a brutal game in terms of its perma-death and perma-destruction consequences, and it is turn-based, so it's rather Rogue-like. But building such a brutal game in a multiplayer context, with absolutely no cushion between players to stop them from brutalizing each other, is quite strange and new.