Then we shall have to break things in new and interesting ways. It's most of the fun in games like minecraft or dwarf fortress for me. You are not battling the game opponents, zombies and creepers are not the enemy. They are the decorations, furniture if you will. The real enemy for me is the rules. How can I best defeat the obvious objectives/limitations. The various mob farms are a good example. I can mine for iron unceasingly or I can grab a couple of villagers and bam, golem farm(or the ungodly iron trench). I could hunt all over for redstone or brave the nether for my glowstone, but that witch's hut is right over there...