Casino Math & Slots
The math the casino counts on: house edge, RTP, volatility, and how slots really decide outcomes.
Your progress
0 of 8 lessons complete
The House Edge
- 4 min
House Edge Explained
Derive the 5.26% American roulette house edge from two numbers, see why dropping one pocket halves it to 2.70%, and why no betting system moves either figure.
- 4 min
RTP vs House Edge
A 96% RTP slot has a 4% house edge: the same number from opposite sides. Where to find the certified figure, and how to turn it into a cost per hour of play.
- 4 min
Volatility and Variance
Two slots can share a 96% RTP and play nothing alike: one hits on 32% of spins, the other on 4%. Volatility is that shape, and it decides how sessions feel.
Inside a Slot
- 4 min
How Slots Decide Outcomes
Every spin is settled by an RNG the instant you press the button: how virtual reels hide 1-in-262,144 jackpot odds, and who actually audits the randomness.
- 4 min
Paylines, Ways, and Mechanics
Paylines, 243 ways, cluster pays, Megaways, and 100x bonus buys: how each mechanic counts a win, and why none of them changes a slot's certified RTP.
- 4 min
Progressive Jackpots
How a 1% contribution funds progressive jackpots, why a 96% RTP game plays like 95% underneath, and what a must-hit-by ceiling does and doesn't promise.
Myths vs Math
- 4 min
The $20 Slot Method: Myth vs Math
The $20 slot method, steelmanned and then dismantled: one $20 pass at $0.50 spins costs about $0.80 on average, and machine-hopping adds nothing to that math.
- 4 min
Hot Machines and the Gambler's Fallacy
Why 'due' machines feel real: a five-heads run is a 1-in-32 event randomness serves up constantly, and the RNG's zero memory makes every hot slot hindsight.