A Flappy Bird-style game you play for real money
Two players stake the same amount and fly the exact same course. The one who lasts longer takes 90% of the pot, paid straight to their wallet. A match lasts about twenty seconds.
Play free — no depositSolo mode has nothing at stake. You only need a funded wallet for duels.
How a duel works
- Both players stake. The two stakes go to an escrow wallet before anyone starts flying.
- Both fly the same course. Pipe heights, pipe movement and the points each pipe awards all come from one shared seed, so neither player gets an easier run.
- The survivor wins. If both crash, the higher score wins. If both crash at the same pipe, it is a tie.
- The winner is paid automatically. The server sends the payout as a Solana transaction, usually within a few seconds. Nobody approves it by hand.
Where the money goes
| Your stake | $5.00 |
| Opponent's stake | $5.00 |
| Pot | $10.00 |
| Platform fee (10%) | −$1.00 |
| Paid to the winner | $9.00 |
The $9.00 includes the winner's own $5.00 back, so the net gain is $4.00. On a tie, both stakes are refunded in full and no fee is taken — a fee pays for settling a match, and a tie settles nothing.
Why the same course matters
In a game played for money, small asymmetries decide matches. Three were found and fixed here: the collision box used to scale with screen height, giving desktop players about 16% more clearance; the jump strength differed between phone and desktop; and scoring depended on frame rate, awarding a 144 Hz screen several times the points of a 30 Hz one for the same pipe.
All three are now fixed constants. The course itself is drawn from one seed shared by both players, so the same pipes arrive at the same moment with the same point values on every device.
Nobody can freeze your winnings
Stakes sit in escrow only for the length of the match. The payout is a Solana transfer triggered by the server the moment the result is settled — there is no manual approval step, no withdrawal queue, and no person in the middle deciding whether you get paid.
Questions
- Is this the real Flappy Bird?
- No. Flappy Cash is an independent game inspired by the tap-to-fly genre. It is not affiliated with Flappy Bird, its creator, or any of its sequels.
- Do I need crypto to start?
- Not to play. Solo mode is free. Duels are settled in SOL, so a duel needs a funded wallet — one is created for you when you sign up, and you can fund it from an exchange, from Phantom, or by card.
- How much can I win?
- A duel pays 90% of the pot, so a $5 duel pays $9.00 to the winner. Beyond that it depends entirely on whether you win, and skilled opponents are hard to beat. Nothing here is an income.
- Can I play against a friend?
- Yes. You can send a challenge link with your score on it, and they can answer it whenever they want — you do not both need to be online at the same time.
- Is there an app to install?
- No. It runs in the browser on phone and desktop, and can be added to a phone home screen like an app.