{
  "game": "blackjack",
  "displayName": "Blackjack",
  "rtpPercent": 99.0,
  "rtpE8": 99000000,
  "engine": "uint32",
  "biasClass": "uniform",
  "params": [
    {
      "name": "actions",
      "desc": "hit/stand/double (opt insurance)"
    },
    {
      "name": "split",
      "desc": "bool (alt)"
    },
    {
      "name": "actions_a",
      "desc": "split hand A"
    },
    {
      "name": "actions_b",
      "desc": "split hand B"
    }
  ],
  "deck": 24,
  "note": "24 ranks drawn (u mod 13); player=[0,2] dealer=[1,3]; hit/stand/double; dealer draws to 17. Fixed pays: lose 0, push 1×, win 2×, blackjack 2.5×; double ×2; insurance +1.5× on dealer natural."
}