Flip

Each flip comes from its own number: the lower half is heads, the upper half tails. Every correct call doubles your run until you cash out.

RTP: 98%
Max win: 1.03M×

Verify a Flip round Play Flip

How it works

How a Flip result is made.

Commit
We choose our server seed before you bet and show its fingerprint. This commits us to that seed.
The draw
Your seeds determine heads or tails for each flip. Correct calls increase your multiplier until you cash out.
Reveal
Rotate your seed to reveal ours. Use both seeds and the bet number to recheck any past result.

The whole formula

serverSeedOur seed, sealed until you rotate
clientSeedYour seed
nonceBet number, +1 each bet
roundExtra numbers, for games that need more

flip.tsTypeScript

1export function flipChoiceFromFloat(float: number): FlipChoice {
2  return Math.floor(float * 2) === 0 ? 'heads' : 'tails';
3}

What it pays

Every outcome and what it pays.

Correct calls in a row
Correct calls	Chance	Pays
1	50.00%	1.96×
2	25.00%	3.92×
3	12.50%	7.84×
4	6.25%	15.68×
5	3.13%	31.36×
6	1.56%	62.72×
7	0.78%	125.44×
8	0.39%	250.88×
9	0.20%	501.76×
10	1 in 1,020	1,003.52×
11	1 in 2,050	2,007.04×
12	1 in 4,100	4,014.08×
13	1 in 8,190	8,028.16×
14	1 in 16,400	16,056.32×
15	1 in 32,800	32,112.64×
16	1 in 65,500	64,225.28×
17	1 in 131,000	128,450.56×
18	1 in 262,000	256,901.12×
19	1 in 524,000	513,802.24×
20	1 in 1.05M	1,027,604.48×

RTP

Return to player.

Theoretical RTP: 98%.

The chance of calling n flips in a row is:
P = 0.5^n
Cashing out after n correct calls pays:
multiplier = 0.98 × 2^n

Test vectors

Fixed inputs, known results.

Reproduce these results with the inputs below.

Verify

Check a Flip round.

Correct calls in a row

Correct calls

Chance

Pays

50.00%

1.96×

25.00%

3.92×

12.50%

7.84×

6.25%

15.68×

3.13%

31.36×

1.56%

62.72×

0.78%

125.44×

0.39%

250.88×

0.20%

501.76×

1 in 1,020

1,003.52×

1 in 2,050

2,007.04×

1 in 4,100

4,014.08×

1 in 8,190

8,028.16×

1 in 16,400

16,056.32×

1 in 32,800

32,112.64×

1 in 65,500

64,225.28×

1 in 131,000

128,450.56×

1 in 262,000

256,901.12×

1 in 524,000

513,802.24×

1 in 1.05M

1,027,604.48×

How a Flip result is made.

Commit

The draw

Reveal

The whole formula

Every outcome and what it pays.

Return to player.

Fixed inputs, known results.

Vector 1The coin lands Heads, Tails, Heads, Heads, Heads, Tails and so on.

Vector 2The coin lands Heads, Tails, Heads, Tails, Heads, Heads and so on.

Vector 3The coin lands Heads, Tails, Heads, Tails, Tails, Tails and so on.

Check a Flip round.

How a Flip result is made.

Commit

The draw

Reveal

The whole formula

Every outcome and what it pays.

Return to player.

Fixed inputs, known results.

Vector 1The coin lands Heads, Tails, Heads, Heads, Heads, Tails and so on.

Vector 2The coin lands Heads, Tails, Heads, Tails, Heads, Heads and so on.

Vector 3The coin lands Heads, Tails, Heads, Tails, Tails, Tails and so on.

Check a Flip round.