Gamdom Dice: how it works, odds and settings

Gamdom Dice is one of the Gamdom Originals, the games Gamdom builds in house rather than licensing from a slot studio. You pick a target number, choose Over or Under, set a bet and roll. If the result lands on your side of the target, you win at a multiplier that depends on how likely that was. A lower chance pays more; a higher chance pays less.

Gamdom puts Dice in the group of Originals that run at around 99% RTP, alongside Plinko, Mines, Keno, Pocket Dice and HiLo. That is a house edge of roughly 1%, low by casino standards, but it never goes away. Bets start at $0.01 and the maximum on Dice is $200,000 per roll according to Gamdom's help centre.

Dice outcomes come from a published SHA-256 hash chain, not from a hidden random number generator, so you can check results after the fact. The verification section below explains how. If you cannot open Gamdom right now, our live mirror list shows the official hosts that respond on your network.

1. Open Dice from the Originals section of the lobby.
2. Set the target with the slider. The help centre describes a 0 to 100 scale.
3. Choose Over or Under. The win chance and the payout multiplier update together as you move the slider or flip the direction.
4. Enter your bet or use the quick buttons: MIN, ½, x2 and MAX.
5. Roll. The result appears at once and any win is paid instantly.

Each roll is independent. A run of ten Unders tells you nothing about the eleventh roll.

The three modes

• Manual. You press Roll every time and can change the target and bet between rolls.
• Auto. You set the number of rolls, what happens to the bet after a win or a loss, and stop conditions for profit and loss. The game then rolls for you until a condition is hit.
• Risk Mode. After a win you can risk the winnings on a single extra roll to double them. It is a separate double-or-nothing bet on top of the one you already won; it carries the same edge and does not change the long-run maths.

Dice is transparent because the whole game is one probability. If your win chance is p per cent and the game returns about 99%, the payout multiplier is roughly 99 ÷ p:

The exact multipliers are shown in the game; the table only illustrates the relationship. Whatever chance you pick, the long-run return is the same, about $99 for every $100 wagered. What changes is variance. At 90% you win often and lose rarely but heavily relative to each win; at 1% you lose almost every roll and occasionally hit a big multiplier.

That means the speed at which you lose money on Dice depends on how much you wager in total, not on which number you pick. A player making 1,000 rolls of $1 at any target has wagered $1,000 and should expect to lose around $10, with a wide spread either way.

Zero edge and rakeback

Gamdom says part of the remaining percentage is returned through its rewards, and it advertises a "zero edge" effect on certain Originals for an initial amount wagered, paid back as instant rakeback. The threshold quoted in the help centre has changed over time, so check the current offer before counting on it. The rakeback guide explains how Instant, Weekly and Monthly Rewards are calculated.

Auto is where most Dice sessions get out of hand, so set it deliberately:

• Number of bets. How many rolls before it stops. Set a number, not infinity.
• On win. Reset to the base bet, or increase by a percentage.
• On loss. Reset, or increase by a percentage. A 100% increase is a Martingale.
• Stop on profit. Ends the run once total profit reaches your figure.
• Stop on loss. Ends the run once total loss reaches your figure. Always set this.

Auto rolls far faster than you can by hand. Faster rolls mean more total wagered per hour, which at a 1% edge means a faster expected loss.

• Martingale (double after a loss). You win small amounts often until a losing streak forces a bet you cannot afford or that exceeds the $200,000 limit. At a 49.5% chance, ten losses in a row happen about once in every 900 or so sequences, and they cost 1,023 times your base bet.
• Reverse Martingale (double after a win). Smaller downside per run, but the long streak you need is rare; most runs end on the first loss.
• Low-chance hunting. Rolling for 99x or bigger with tiny bets. Fun, but the expected return is identical and the losing streaks are long.
• "Hot" or "cold" numbers. Every roll is independent. The hash chain was fixed in advance; nothing you do changes the next result.

None of these change the 99% return. They only reshape how wins and losses are distributed.

Gamdom's provably fair system works differently from the client-seed and nonce systems some casinos use. For each game, Gamdom generates a chain of 10 million SHA-256 hashes from a secret seed and publishes the final hash in advance. Games then play through the chain in reverse order, and each game's hash is revealed after it ends.

Because each hash is the SHA-256 of the next one in the chain, anyone can check that a revealed game hash, hashed again, gives the hash of the previous game. That proves the results were fixed before play and not changed afterwards. Gamdom publishes sample code for Dice in its Originals help article showing how a game hash turns into a roll.

To check a roll yourself:

1. Copy the game hash from your bet details.
2. Run Gamdom's published Dice code on it to get the result and compare it with what you saw.
3. Hash it with SHA-256 and confirm it matches the previous game's hash.

Our provably fair guide walks through the process for every Original.

• Decide the session budget first and move the rest into the Vault, Gamdom's free, 2FA-protected safe inside your wallet.
• Set stop-on-loss in Auto every time.
• Pick a bet size that lets you survive the swings of the chance you choose; a 1% target needs a much smaller bet than a 50% one.
• Count wagered, not won. Your expected loss is about 1% of total wagered.
• Do not chase. Increasing bets to win back a loss is how Martingale ruin happens.