Play money. Every game here is free practice — no account, no wallet, no real funds. Dollar buy-ins show the scale a real table would have. Staked duels are Solana devnet only and are not escrowed on-chain yet.

Sign in

How it works

Our mission

Most betting platforms make you play against the house. DoubleDeals is built the other way round: you play against another person, the rules and the money live in a smart contract that anyone can read, and the platform only earns when a player wins. Two people, one round, a result neither side can bend. The money moves between players — we simply run the table and take one small fee from the winnings.

  1. 01

    You pick a duel

    Choose a game, a table size and a buy-in. Every player at the table stakes the same amount. There is no house seat playing against you — you are always facing another player.

  2. 02

    The pot is locked in the contract

    Each player's buy-in goes into the DoubleDeals smart contract for the length of the round. We cannot move, freeze or spend a locked pot. The money stays between the players until the result is known.

  3. 03

    The result is drawn

    Rock paper scissors uses commit–reveal: both hands are sealed behind a fingerprint before anyone can see the other side, so neither player can read or change their hand after both are locked.

  4. 04

    The pot pays out automatically

    The contract sends the winnings to the winner straight away. A tie returns every stake with no fee. Nobody has to trust us to press a payout button.

  5. 05

    Nobody joined?

    An unfilled table times out and refunds in full. Funds are never left stuck in a round that did not happen.

Player vs player, not player vs house

The house does not sit at the table. We do not win when you lose. Our only revenue is the platform fee taken from the winner's profit, which means we are aligned with fair play and active tables. Your opponent's buy-in goes to you when you win; your buy-in goes to them when you lose. The contract enforces this automatically.

Fairness & randomness

In rock paper scissors, each player first submits a sealed hand and only then reveals it, so neither player can react to the other. For games that need pure randomness, the result will use a separately audited Solana-compatible verifiable randomness provider. Nothing controlled by DoubleDeals will be allowed to select a winner.

Fees & gas

  • 3.7% fixed, taken from the winner's profit only. Your own buy-in is never touched by the fee.
  • That single fee covers everything: the platform's share and the network gas costs. There are no extra charges on top, and the 3.7% never changes per game.
  • Ties and refunds are free — you get your stake back whole.
  • On the $5 to a Millionaire run, nothing is taken while your money stays on the table. The 3.7% is charged once, on your profit, when you cash out.
  • The contract caps the fee, and that cap can never be raised.
See the doubling maths

Why you can trust the smart contract

The DoubleDeals contract is the referee, the vault and the cashier in one — and it follows its rules exactly, every time, for everyone:

  • Your money is yours. Deposits sit in a balance under your own address. Nobody — including us — can move, freeze or withdraw your balance or a locked pot. The code simply contains no function that lets us.
  • Withdrawals can never be paused. Even if new games are ever stopped, taking your own money out always works.
  • The rules can't change mid-game. The contract is not upgradeable: the code that holds your stake today is the code that pays you tomorrow.
  • Fees are hard-capped. The 3.7% fee can only ever go down — the contract has a permanent ceiling written in.
  • Everything is public. The contract code is published and readable by anyone on Solana Explorer, and every stake, result and payout will be recorded on-chain where you can check it yourself.
  • Tested before it holds money. The contract must pass a full automated test suite and an independent audit before real funds are accepted.

Solana charges a small network fee for signed actions. The exact SOL amount and estimated network fee will be shown before a player approves a transaction. This network fee is separate from the fixed 3.7% platform fee on winner profit.

Where the project is right now

  • Solana Devnet only. No real money is accepted anywhere on the site.
  • Games you play from the home page are practice rounds in your own browser — instant, free and worth nothing.
  • The Solana escrow program described above is not deployed yet, so stakes are counted rather than escrowed on-chain.
  • Accounts, the lobby, duel history and profiles are live if you want them.