{
  "game": "menagerie",
  "displayName": "Menagerie",
  "rtpPercent": 99.0,
  "rtpE8": 99000000,
  "engine": "uint32",
  "biasClass": "modulo",
  "params": [
    {
      "name": "difficulty",
      "desc": "species count S: easy 4 / medium 5 / hard 6 / expert 7 / master 8"
    },
    {
      "name": "reveals",
      "desc": "tiles revealed, 0..S (0 = the round was abandoned before its first reveal)"
    }
  ],
  "difficulty": {
    "easy": {
      "S": 4,
      "fairNumer": [
        null,
        6,
        8,
        16,
        64
      ],
      "fairDenom": 6,
      "ladderE8": [
        100000000,
        99000000,
        132000000,
        264000000,
        1056000000
      ]
    },
    "medium": {
      "S": 5,
      "fairNumer": [
        null,
        24,
        30,
        50,
        125,
        625
      ],
      "fairDenom": 24,
      "ladderE8": [
        100000000,
        99000000,
        123750000,
        206250000,
        515625000,
        2578125000
      ]
    },
    "hard": {
      "S": 6,
      "fairNumer": [
        null,
        120,
        144,
        216,
        432,
        1296,
        7776
      ],
      "fairDenom": 120,
      "ladderE8": [
        100000000,
        99000000,
        118800000,
        178200000,
        356400000,
        1069200000,
        6415200000
      ]
    },
    "expert": {
      "S": 7,
      "fairNumer": [
        null,
        720,
        840,
        1176,
        2058,
        4802,
        16807,
        117649
      ],
      "fairDenom": 720,
      "ladderE8": [
        100000000,
        99000000,
        115500000,
        161700000,
        282975000,
        660275000,
        2310962500,
        16176737500
      ]
    },
    "master": {
      "S": 8,
      "fairNumer": [
        null,
        5040,
        5760,
        7680,
        12288,
        24576,
        65536,
        262144,
        2097152
      ],
      "fairDenom": 5040,
      "ladderE8": [
        100000000,
        99000000,
        113142857,
        150857142,
        241371428,
        482742857,
        1287314285,
        5149257142,
        41194057142
      ]
    }
  },
  "maxReveals": 8,
  "note": "species_i = u_i mod S (S = 4..8 by difficulty); a brand-new species climbs, the FIRST repeat busts; d distinct species pay multiplier = floor(rtp * S^(d-1) * (S-d)! / (S-1)!) — read off the baked fairNumer[d]/fairDenom ratio (== ladderE8[d] at the published RTP)."
}