Skip to the set
Bigbonk Studio

Sc. 01

Wobble Drop

Pick a stake and let the clay ball go. At each of the twelve rows of pegs it bounces left or right with exactly even odds, and the cup it lands in multiplies your stake.

A plasticine pegboard with a pink clay ball bouncing between rows of chunky pegs
Ball drops. Pegs wobble. A cup catches it.

The pegboard

Join

50 12 4 1.6 1 0.6 0.3 0.6 1 1.6 4 12 50
Stake per drop

Choose a stake, then drop the ball.

Last drops

  1. None yet

How it pays

Each of the twelve rows is a fair coin toss: left or right, half and half. The cup number is simply how many times the ball went right, so the chance of each cup comes straight from the binomial distribution: the number of paths into that cup divided by the 4,096 possible paths. The path is drawn first, then the ball is animated along that exact route.

Cups, multipliers and exact chances
CupMultiplierPaths (of 4,096)ChanceBack on a 10 stake
150×10.024%500
212×120.293%120
34×661.611%40
41.6×2205.371%16
51×49512.085%10 (stake back, not a win)
60.6×79219.336%6 (a loss of 4)
70.3×92422.559%3 (a loss of 7)
80.6×79219.336%6 (a loss of 4)
91×49512.085%10 (stake back, not a win)
101.6×2205.371%16
114×661.611%40
1212×120.293%120
1350×10.024%500

Average return: 93.69%, calculated exactly, not simulated. Add up paths × multiplier for all thirteen cups and you get 3,837.6; divide by 4,096 and that is 0.936914 of every coin staked, on average, over a very long run. Any single drop can land anywhere.

A cup that pays less than 1× is a loss, even though some coins come back, and the 1× cups only hand your stake back. Only the cups at 1.6× and above count as a win.

Before the cameras roll: are you 18 or over?

Bigbonk Studio is a free social casino for adults. Every game uses virtual coins that have no monetary value and can never be bought or withdrawn.

Get on the call sheet

Pick a nickname and we will put 1,000 coins in your tin. No email, no password, nothing to buy.

Your nickname and coins stay in this browser only. See the storage policy.

Your call sheet

Nickname
In the tin
coins
Rounds played
0
Daily top-up

Signing out wipes your nickname and coins from this browser. Coins are virtual and have no monetary value.