From Jason Rohrer!Read the article, its worth it. But the TLDR version: you build up your house and fill it with traps to protect your vault. You can then venture into other peoples houses and attempt to get through their traps and steal their loot. Of course while you're out someone can sneak into your house and do the same. This is all handled asynchronously, so you never actually run into anyone else. Pretty awesome concept.
