Small, honest tools for understanding the odds before they cost you anything. All free, all no-signup, all built on the same idea: see the math, then play it.
Every casino game's house edge, ranked lowest to highest and sortable — blackjack, baccarat, roulette, craps, slots and provably-fair originals. The best games still take a cut; this shows exactly how much. Embeddable.
Open the comparison →Run the famous "double after a loss" system and watch a finite bankroll and table limit guarantee ruin. Single sessions plus a 1,000-run Monte Carlo that shows how often it busts.
Run the simulator →Set your bankroll, bet size, house edge and variance, then simulate 2,000 bankrolls to see how often a negative edge wipes you out — and how bet size and variance change your odds of survival. Embeddable.
Run the calculator →How much does gambling actually cost? Enter your bet, speed and the game's house edge to see your expected (theoretical) loss per hour, month and year — plus how the same play costs across different games. Embeddable.
Run the calculator →Paste a server seed, client seed and nonce to recompute a Stake-style result yourself with HMAC-SHA256 — and confirm a game wasn't rigged. Plus why "provably fair" still isn't a 0% edge. Embeddable.
Open the verifier →Five quick casino-math questions, new every day. Build a streak, share your score, find out if you can actually beat the house. The casino-math puzzle nobody else built.
Play today's challenge →Per-game breakdowns of how each house edge works — Limbo, Mines, Crash, Dice and more — each with a free instant-play link so you can watch the math live.
Browse the games →Tools tell you the odds. The casino lets you feel them — free, no signup, the edge shown live.
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