No real money. No signup. No risk.
Your balance lives in this browser only via localStorage — it isn’t real and isn’t worth anything. Reset it any time from the controls panel. Every bet still uses real provably-fair machinery (HMAC-SHA256), so you can verify outcomes the same way you would on Stake, Shuffle or any of the other casinos WinLogger tracks. Click Provably Fair in the controls to inspect, rotate or audit your seeds.
Plinko — Rules & Provably Fair
How to play
Choose the number of rows (8 to 16) and a risk level. Each ball bounces off pegs, going left or right with equal probability at each peg, until it lands in a bin at the bottom. Each bin has a fixed multiplier.
Outer bins (rare landings) pay big. Center bins — the most likely outcome — pay small, often less than 1×. Higher risk levels push more value to the edges.
Math
For N rows, the ball lands in bin k (0-indexed from left) with probability C(N, k) / 2N — the binomial distribution. Bin N/2 is most likely; the edge bins each occur with probability 1 / 2N.
Provably fair
Each peg's left/right outcome is a single bit pulled from the HMAC stream. N rows consumes N bits per drop. The same seeds + nonce reproduce the same path exactly.