Dice Games Guides: Crypto Dice, Craps Odds and Dice Probability

Dice games are some of the easiest casino games to calculate. Whether you're rolling two physical dice at a craps table or betting on a random number in a crypto dice game, the odds come from simple counting: favourable outcomes divided by total outcomes, as Britannica's guide to gambling odds puts it.

Our dice guides cover both families. Crypto dice lets you choose your own win chance and shows the payout on every bet. Craps uses two six-sided dice and a mix of bets with very different house edges. In both cases we give the exact numbers and check them with our own simulations.

Two kinds of dice game

Crypto dice (roll-under / roll-over). A random number from 0 to 100 is generated for each bet. You pick a target; if you bet "under 25", you win 25% of the time. The multiplier is set from your win chance, so the house keeps the same share at every target. In provably fair versions, the number comes from a hash of seeds you can verify afterwards, as one major operator's implementation notes describe.

Classic dice and craps. Two six-sided dice make 36 equally likely combinations. Totals near 7 can be made more ways, so they come up more often. Craps builds a whole table of bets on top of that distribution.

Dice odds: the key numbers

The pass line figures match the 1.41% and 1.36% published by the Wizard of Odds.

What our dice simulations show

We ran two sets of crypto dice simulations at a 1% house edge:

• RTP checks. 1,000,000 rolls at each of five targets. Observed return to player ranged from 98.98% to 99.06%, against a theoretical 99%. Over enough rolls the edge appears exactly as predicted, the long-run frequency idea covered in introductory statistics.
• Bankroll survival. 20,000 players per target, each starting with 100 USDT and betting 1 USDT per roll until they doubled, went bust or reached 10,000 bets.

The surprise for many players: the "safe" 90% target never doubled a bankroll in our simulation, and 57.28% of those players went bust. The volatile 10% target doubled 43.94% of the time. Same edge, very different sessions.

How to use our dice guides

• Dice game guide: how crypto roll-under dice works, a full win-chance and multiplier table, our bankroll survival results, and classic two-dice probability.
• Craps odds explained: the pass line edge worked out step by step, true odds for every point, the zero-edge odds bet, place versus buy bets, and a ranking of the best craps bets.
• Dice odds calculator: enter any target to get the win chance, multiplier and expected loss instantly.

Featured tool: the dice odds calculator

Playing dice games with crypto and USDT

Crypto dice shows its math on every bet: the win chance and multiplier are right there before you roll. Playing with USDT keeps your bankroll in dollar terms, so a good session isn't undone by a drop in the price of the coin you hold. Dice also encourages fast, repeated betting, so keep network deposit fees small relative to your bankroll; our USDT and payments guides compare networks.

If you enjoy dice, two related crypto games use the same transparent approach: crash games, where the chance of reaching a multiplier x is 99 ÷ x at a 1% edge, and Mines, where every tile pick has an exact probability. Set a budget before you start: every dice bet carries a house edge, and no system removes it.