{
  "invalid_references": [],
  "technology_cycles": [],
  "upgrade_cycles": [],
  "techs_per_era": {
    "0": 49,
    "-1": 36,
    "1": 51,
    "2": 52,
    "3": 48
  },
  "units_per_domain": {
    "0": 333,
    "1": 53,
    "2": 27
  },
  "great_wonders": 66,
  "small_wonders": 43
}