Free calculators.
No predictor claims.
RTP Lab publishes the formula behind Mines, Crash, Plinko, Dice and Bonus & VIP math — free, no signup, and playable with demo credits. Every table is computed on the page, not looked up from a hidden source.
A calculator layer, not a betting product.
The math, shown
Win chance, payout and expected value formulas are printed next to every tool — not just a number, the equation that produced it.
Demo only, always
No account, no deposit, no real money changes hands — every simulator runs on free demo credits stored in your browser.
No predictor framing
We don't sell "hacks" or "predictor" tools. Provably-fair outcomes can't be predicted, and any page claiming otherwise is describing pattern-matching, not math.
Computed, not typed in by hand.
Every table on this site is generated from the same formula function shown on the page, run live in your browser — not a static number pasted into the markup. When platform-specific figures genuinely disagree across public sources, the site says so directly instead of picking whichever number sounds most authoritative.
The exact methodology — RTP and house-edge derivations, how provably-fair verification works, and the site's policy on unverified or conflicting figures — is covered in full on the Method page.
Not Stake, BC.Game, Rainbet or Roobet — and not paid by them.
RTP Lab is an independent site. Platform names appear here only to describe and compare publicly-cited game mechanics — we're not affiliated with, endorsed by, or sponsored by any platform we mention, we don't carry affiliate links or referral codes, and nothing on this site is an invitation to gamble real money anywhere. Trademarks mentioned belong to their respective owners.
Five tools,
the same formula policy.
Mines, Crash, Plinko, Dice and Bonus & VIP all publish their math the same way — free, no signup, demo only.