Coin Flip is a straightforward game from Bethropic where you call heads or tails before a virtual coin lands. It appeals to anyone who wants a pure 50/50 proposition without complicated rules or bonus features getting in the way. Each round is quick and the outcome is determined by provably fair mechanics that you can verify yourself using the server seed, client seed and nonce shown after every flip.
At a glance
| Return to player | 99% |
| What you set | Heads or tails |
| Best multiplier | 1.98× |
Open Coin Flip at Bethropic — a 0 bet plays the game for free, no download.
How it works
A straight 50/50 call. A win returns 1.98× your stake; a loss returns nothing.
The thing players most often miss is that a win here pays 1.98× your stake, not an even 2×. That half-percent difference is small but it compounds over time, which is why the return to player sits at 99 percent rather than 100. If you're thinking of this as a true fifty-fifty bet, you're not accounting for the house edge built into the payout. It's still fair and transparent, but the math favors the house over the long run.
The 99% return to player figure means that across a large number of rounds, players collectively see 99 pence returned for every pound wagered. In practice, this means individual sessions will vary wildly—you might win several flips in a row or lose several in a row. The 99% is what happens when you zoom out over thousands of bets, not what you should expect from a single evening or week of play.
Fair by design
- Every round is provably fair: the outcome comes from a server seed, your client seed and a nonce, all shown with the round so you can check the result was fixed before the bet. You can rotate your seed at any time.
- A 0 bet is always allowed, so every original game can be played for free.
- Bet limits are set per coin rather than per game — the same minimum and maximum apply across the originals.
Play Coin Flip · All Bethropic games
Payouts settle within the per-coin maximum profit cap, so the headline multiplier is the ceiling of the game, not of a single bet.