Learn the Odds
Plain-English guides to the math behind every casino game — house edge, variance, which bets are worth making, and how the games stay fair. Core game figures are produced or checked against our verified engines; broader comparison figures are sourced and cited.
Start here
- The House Edge: How Casinos Always Win Interactive
Why the math always favors the house — with an interactive model that grinds a bankroll down before your eyes.
- RTP (Return to Player), Explained Interactive
What 'return to player' really means, the numbers for common games, and why a high RTP still isn't a winning one.
- Variance: Why You Can Win at a Losing Game Interactive
The swing around the average — why short-term winners exist, and why those wins don't last. With a live chart.
Browse by game
Blackjack
The lowest house edge of any table game — but only with basic strategy.
Roulette
One extra zero nearly doubles the house edge. The wheel you choose is the only strategy.
Baccarat
Three bets. One answer: Banker at 1.06%. The simplest math at any casino table.
Craps
The only 0% house edge bet in any casino lives on this table.
Browse by topic
Latest
Every guide is sourced; math figures come from our own verified engines. More land as we add games and tools.