{
  "name": "rooms:undead",
  "rooms": [
    {"level": [2, 3], "frequency": "single", "type": "OSSUARY"},
    {"level": [2, 3, 4], "frequency": "single", "type": "CRYPT"},
    {"level": 4, "frequency": "single", "type": "OBSIDIAN"},
    {"level": 4, "frequency": "single", "type": "DARKHALL"},

    {"level": [2, 3, 4], "frequency": "random", "type": "CRYPT", "weight": 10},
    {"level": [2], "frequency": "random", "type": "PRISON", "weight": 10}
  ]
}