{
  "game": "dragon-3d",
  "displayName": "Dragon Tower 3D",
  "rtpPercent": 99.0,
  "rtpE8": 99000000,
  "engine": "uint32",
  "biasClass": "uniform",
  "params": [
    {
      "name": "difficulty",
      "desc": "pedestals / skulls per row: easy 4/1, medium 3/1, hard 2/1, expert 3/2, master 4/3"
    },
    {
      "name": "picks",
      "desc": "the pedestal chosen on each row in order, 0 = leftmost (empty = abandoned before the first pick)"
    }
  ],
  "rows": 9,
  "difficulty": {
    "easy": {
      "tiles": 4,
      "hazards": 1,
      "ladderE8": [
        100000000,
        132000000,
        176000000,
        234666666,
        312888888,
        417185185,
        556246913,
        741662551,
        988883401,
        1318511202
      ]
    },
    "medium": {
      "tiles": 3,
      "hazards": 1,
      "ladderE8": [
        100000000,
        148500000,
        222750000,
        334125000,
        501187500,
        751781250,
        1127671875,
        1691507812,
        2537261718,
        3805892578
      ]
    },
    "hard": {
      "tiles": 2,
      "hazards": 1,
      "ladderE8": [
        100000000,
        198000000,
        396000000,
        792000000,
        1584000000,
        3168000000,
        6336000000,
        12672000000,
        25344000000,
        50688000000
      ]
    },
    "expert": {
      "tiles": 3,
      "hazards": 2,
      "ladderE8": [
        100000000,
        297000000,
        891000000,
        2673000000,
        8019000000,
        24057000000,
        72171000000,
        216513000000,
        649539000000,
        1948617000000
      ]
    },
    "master": {
      "tiles": 4,
      "hazards": 3,
      "ladderE8": [
        100000000,
        396000000,
        1584000000,
        6336000000,
        25344000000,
        101376000000,
        405504000000,
        1622016000000,
        6488064000000,
        25952256000000
      ]
    }
  },
  "note": "per row r: shuffle(tiles) driven by uints[r·(tiles−1) .. (r+1)·(tiles−1)) → the first `hazards` entries are the skulls, every other pedestal holds a jade dragon egg (safe). Walk the picks: a skull busts, an egg climbs. multiplier = floor(rtp · tiles^k / (tiles−hazards)^k) after k safe rows."
}