A coin flip is the oldest way two people settle a bet. Done right it is also the purest: no cards to count, no board to read, no dealer to distrust — just two calls and a coin in the air. The only question that ever really mattered is whether the coin is honest.
Here you play Coinflip online against a real person. You create a private invite link, someone opens it, and the two of you call the same coin in real time, round after round, until one of you takes the majority. No bot, no house, no thumb on the scale.
Why an honest coin flip matters
In most coin flip games you are betting against the house, and the odds quietly belong to them. Not here. Your opponent is another player, both sides put in exactly the same stake, and the money only moves between the two of you. The coin itself comes from a seed that is locked before the match begins:
- 50/50, provably. The flip is drawn from an HMAC-SHA256 stream, not a hidden RNG.
- Both players seed it. Neither side controls the randomness alone.
- Verifiable afterwards. The server seed is revealed when the match ends, so every flip can be recomputed.
- No house edge on the coin. The only fee is a flat 5% on the pot of a wager match.
How a 1v1 Coinflip match works
- Open the Coinflip setup.
- Choose Best of 1, 3, 5 or 7, then pick Fun Game (Free) or Bet XMR.
- Add a nickname and create your private invite link.
- Send the link. Whoever opens it first becomes your opponent.
- Call the coin — Monero or Star. When both of you have called, the coin is flipped and the round is settled.
Both calls are secret until the flip. If you both call the same side the round is a draw and is replayed; you only take a round when your calls differ and the coin lands on yours. That is what turns a coin toss into a duel: you are not just betting on the coin, you are betting on getting your opponent to pick the other side.
Free toss, or a Monero wager
A Fun Game costs nothing and needs no account: pick a nickname and you are flipping in seconds. If you want something on the line, Bet XMR locks the same stake from both players and pays the whole pot — minus the flat 5% house fee — to the winner the moment the last flip lands. Canceled or unaccepted invites are refunded automatically, so nothing is ever stuck.
Flip against someone now: create a Coinflip match and send the link.