{
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    "alloy",
    "crystals",
    "energy",
    "credits",
    "population",
    "water",
    "deuterium",
    "food"
  ],
  "weights": {
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    "crystals": 1.2,
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    "water": 1.1,
    "deuterium": 1.3,
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  },
  "global_bounds": {
    "min": -1.0,
    "max": 1.0
  },
  "tiers": {
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    },
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    },
    "legendary": {
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    }
  },
  "classes": {
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      "constraints": {},
      "bias": {},
      "temperature_range_c": [5, 30]
    },
    "ice": {
      "spawn_weight": 1,
      "constraints": {
        "water": { "min": 0.5 },
        "energy": { "max": -0.6 }
      },
      "bias": {
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        "energy": -0.1
      },
      "temperature_range_c": [-80, -10]
    }
  }
}