Terraria, Minecraft, Cube World - lots of popular games recently have all been made on the basis of generating random worlds composed from blocks/cubes with the ability to build/remove the blocks and build your own little world whilst having adventures with them and giving you a free reign over your creativity. So what do you think of these types of games? Which is your favourite? Do you prefer pre-set maps or maps which are randomly generated when you load them? Do you prefer to have a clear-set storyline or do you prefer to roam in your own little sandbox world and gather resources to build cooler and better stuff?
Also feel free to post and showcase some of your most creative designs that you've made in any of them; I'd love to see them!