I'm looking into creating some new custom quests and starting off (and learning the quest system) by writing some gathering quests. I've got about 40-50 quests ready to test (and hopefully release this weekend) but they're currently all a bit the same. It's got me wondering about world generation. I presume the procedure that generates the world uses some seed based on the co-ordinates. But I'm wondering how identical worlds are. Do separate people, playing single player, visiting the same world, see the same landscape? Are there dungeons in identical places? Do identical chests drop identical items? For example, I'd like to do a quest where you go to planet X and search a dungeon or generated building for an item I know will be there for all.