Probability Breakdown
Each peg is an independent 50/50 left-right decision, creating a binomial distribution. With N rows, the ball makes N binary choices. The probability of landing in any specific bin follows Pascal's triangle. Edge bins require all N bounces to go the same direction (probability: 1/2^N). With 16 rows, that's 1 in 65,536 — which is why the edge multiplier can be 1,000x.
House Edge Explained
Plinko's theoretical RTP is 97.0%, giving the house a 3.0% edge. This means for every 100 coins wagered, you can expect to get back 97 coins on average over thousands of drops. The house edge is baked into the multiplier values at each bin — the sum of (probability × multiplier) across all bins equals 0.97.
What Does This Mean for You?
With an RTP of 97.0%, for every 100 coins you wager on Plinko, you can expect to get back approximately 97.0 coins over thousands of rounds. The remaining 3.0% goes to the house.
This is a long-run average. In any single session, your results will vary wildly — that's the variance (volatility: Medium). Short sessions can see 50%+ swings in either direction. The RTP only converges over thousands of rounds.
Rookie's provably fair system means you can verify these odds yourself. Every round is cryptographically determined before you play, and the math is public. No hidden RNG, no server-side manipulation.