Fourteen tools, one rule: play money only. The simulators let you feel variance before it costs anything, the calculators price offers in real turnover, and the verifier proves whether a round you already played was tampered with.
Simulators
Calculators & verifiers
These are instruments, not systems
Nothing on this page beats a house edge, predicts a result or transfers to real money. If a tool ever seems to promise that, we have written it badly — tell us.
Why we group table games and Originals on the same page
Crash, Mines, Plinko and Dice started this collection because they are the Originals formats most crypto casinos build in-house, each with a fair formula simple enough to publish in full. Roulette, Blackjack and Baccarat sit next to them for the same reason: every casino game, table or Originals, ultimately reduces to a payout table and a house edge, and seeing that structure repeat across eight very different formats is more convincing than reading about it once.
The slot machine simulator rounds the set out by tackling the one category most players assume is unknowable — a slot's return to player — and disclosing the entire paytable behind a configured 96% figure, arithmetic and all. Pair any of these with the wagering calculator before claiming a real bonus, since a generous-looking offer and a fair house edge are two completely separate questions, and only one of them this page can price for you directly.
Every simulator that tracks a running bankroll also feeds our play-money leaderboard — beat your own best run on Roulette, Blackjack, Baccarat or the slot demo and it's saved locally in your browser, with nothing sent anywhere and no account required to see it.
A sensible order to work through them
If you're new to this page, start with whichever simulator matches a game you already play, not the one that looks most impressive. Someone who plays roulette for real money gets more out of the roulette simulator's batch mode than out of Crash's inverse-CDF curve, even though the underlying lesson — a fixed edge survives every bet type you throw at it — is identical across both.
From there, the EV and Kelly calculator turns the abstract idea of expected value into your own numbers, and the provably fair verifier is the one tool on this page built for a real bet you already placed rather than a hypothetical one. Used together, the sequence runs from understanding a game's maths, to sizing a stake sensibly, to checking that a specific round you played was not tampered with — three separate questions that get muddled together far too often in casual advice about gambling responsibly.
None of that sequence changes what any individual tool actually is: a small, transparent maths demonstration running on play money in your browser, with a documented formula behind every number it shows you. Treat the results as a way to understand a mechanic, not as a forecast for what a real table or a real spin will do next — that distinction is the one thing every tool on this page has in common with every other one.