I was hoping a dev or someone who's figured it out could help with the best way to test dungeons being built. Most likely changes to the planetgen.config file. "spawnMonsters" : false, "spawnDungeonNearSpawn" : true, and whitelisting only your dungeon seem the obvious things. But even so it's still hard, because I can't find my dungeon in the game and I don't know whether that's because there's something wrong with it, or it's just not showing up by chance. So if anyone could clarify and provide a way to ensure a 100% chance of a dungeon being generated, that would be very helpful.