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🎲 Dice · House edge 1%

Dice: The Odds, the 1% House Edge, and the Slider That Lies to You

Dice looks like the fairest game in the casino — you pick your own win chance, you see the payout before you roll. But the slider is a magician's distraction: drag it anywhere from 1% to 98% and the house edge stays welded at exactly 1%. EV Lab lets you prove it yourself, free, with no signup and not a cent of real money — just the math, running live, while you roll.

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How it works

The house edge & the math

The house edge in Dice is exactly 1%, and it comes straight from the payout formula. When you choose a win probability p (your win chance as a decimal), the game pays a multiplier of 0.99 / p. Your expected value per unit bet is therefore p * (0.99 / p) - 1 = 0.99 - 1 = -0.01, or -1%. Notice that p cancels out completely: the win probability you choose vanishes from the equation, which is why the edge is identical at every single setting. A fair game would pay 1.00 / p (returning 100% of your stake on average); Dice pays 0.99 / p, quietly skimming that 1% no matter how you set the slider. At a 50% win chance the payout is 0.99 / 0.50 = 1.98x; at 25% it is 0.99 / 0.25 = 3.96x. Both are -1% EV. The "0.99" is the entire trick.

Worked example. Set the slider to a 25% win chance. The payout is 0.99 / 0.25 = 3.96x. Bet 100 points per roll for 100 rolls. On average you win about 25 of them, each returning 396 points, for roughly 25 * 396 = 9,900 points collected. You staked 100 * 100 = 10,000 points total. Net result: about -100 points, which is exactly -1% of the 10,000 wagered — the house edge, right on schedule.

Does any strategy help?

No Dice strategy changes the outcome, and the math above is exactly why. Martingale (doubling after losses), flat betting, switching between roll-under and roll-over, chasing a high-multiplier "lucky" setting — every one of these only rearranges variance. The slider is a genuine, useful control, but all it controls is the shape of your luck: high win-chance gives you many small wins and rare painful losses; low win-chance gives you long droughts and occasional spikes. The expected value is -1% in all of them because the 0.99 in the payout formula never moves. Provably fair systems (the cryptographic seed-and-hash setup popularized by Stake-style dice) guarantee the roll wasn't rigged — but provable fairness and a positive edge are different things. A bet can be perfectly fair-by-RNG and still cost you 1% on average. The only "winning strategy" is understanding that the edge is structural, then playing free where it costs nothing to see.

FAQ

What are the odds in the Dice game?
You set them yourself: the slider's percentage is your win probability. Pick 50% and you win half the time at a 1.98x payout; pick 25% and you win a quarter of the time at 3.96x. The payout is always 0.99 divided by your win chance, which fixes the house edge at 1% no matter what odds you choose.
What is the house edge on Dice?
Exactly 1%. The payout multiplier is 0.99 / p instead of a fair 1.00 / p, so your expected value is p * (0.99 / p) - 1 = -1% at every single slider setting. Your chosen win chance cancels out of the equation entirely.
Does any Stake dice strategy actually work?
No. Martingale, flat betting, roll-under vs roll-over, or hunting a 'hot' multiplier only change your variance — how bumpy the ride feels. None of them touch the -1% expected value, because the edge lives in the 0.99 payout constant, not in how you bet.
What does provably fair dice mean, and does it make the game profitable?
Provably fair uses cryptographic seeds and hashes so you can verify the roll wasn't manipulated. It guarantees honesty, not profit. A roll can be perfectly fair and still carry a 1% house edge — fairness of the RNG and a negative EV are two separate things.
Is there a free dice game with no download?
Yes — EV Lab's Dice runs in your browser with no download, no signup, and no real money. It shows the house edge and expected value live so you can experiment with the slider and watch the 1% edge hold steady at every setting.

The Dice slider lets you pick any win chance you want — and the house edge stays exactly 1% at every setting, because your odds cancel out of the payout math. The slider controls your variance, never the edge.

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