{
  "schema": {
    "cols": {
      "type": "range",
      "min": 6,
      "max": 12,
      "step": 1,
      "name": "Board width",
      "description": "Number of columns in the play well."
    },
    "rows": {
      "type": "range",
      "min": 7,
      "max": 16,
      "step": 1,
      "name": "Board height",
      "description": "Number of rows in the play well."
    },
    "pass_lines": {
      "type": "range",
      "min": 1,
      "max": 4,
      "step": 1,
      "name": "Lines to verify",
      "description": "Lines a visitor must clear to pass. The captcha is satisfied the moment this many lines are cleared."
    },
    "gravity": {
      "type": "range",
      "min": 4,
      "max": 60,
      "step": 2,
      "name": "Fall speed",
      "description": "Ticks the piece takes to fall one cell. Higher means slower; a hard drop places it instantly either way."
    },
    "lock_delay": {
      "type": "range",
      "min": 0,
      "max": 60,
      "step": 2,
      "name": "Lock delay",
      "description": "Ticks a resting piece waits before it locks, giving time for a last slide or rotate."
    },
    "sound": {
      "type": "boolean",
      "name": "Sound effects",
      "description": "Play subtle sound effects (piece lock, line clear, verified, top-out). Visitors can always mute in-game."
    }
  },
  "presets": {
    "default": {
      "_default": true,
      "cols": 7,
      "rows": 12,
      "pass_lines": 2,
      "gravity": 55,
      "lock_delay": 16,
      "sound": true
    },
    "casual": {
      "_extends": "default",
      "pass_lines": 1,
      "gravity": 60
    },
    "challenge": {
      "_extends": "default",
      "pass_lines": 4,
      "gravity": 30
    },
    "wide": {
      "_extends": "default",
      "cols": 12,
      "pass_lines": 3
    }
  }
}