{
  "schema": {
    "wave_count": { "type": "range", "min": 1, "max": 4, "step": 1 },
    "enemies_per_wave": { "type": "range", "min": 3, "max": 12, "step": 1 },
    "enemy_speed": { "type": "range", "min": 2, "max": 7, "step": 0.5 },
    "shield_hits": { "type": "range", "min": 1, "max": 6, "step": 1 },
    "time_limit_seconds": { "type": "range", "min": 15, "max": 90, "step": 5 },
    "sound": "boolean"
  },
  "presets": {
    "default": {
      "_default": true,
      "wave_count": 2,
      "enemies_per_wave": 5,
      "enemy_speed": 3.5,
      "shield_hits": 3,
      "time_limit_seconds": 60,
      "sound": true
    },
    "casual": {
      "wave_count": 1,
      "enemies_per_wave": 4,
      "enemy_speed": 2.5,
      "shield_hits": 5,
      "time_limit_seconds": 60,
      "sound": true
    },
    "hardcore": {
      "wave_count": 3,
      "enemies_per_wave": 8,
      "enemy_speed": 5.5,
      "shield_hits": 1,
      "time_limit_seconds": 45,
      "sound": true
    }
  }
}