How do you play casino Dice Roll Over Under?

Casino Dice works on a 0–100 number range. You set a target number using the win chance slider (2–98%), choose Roll Over or Roll Under, place your bet, and press Roll. A random number between 0 and 100 is generated. Roll Over wins if the result is above your target; Roll Under wins if the result is below your target. The further your target from the middle, the harder it is to win — but the higher the multiplier payout.

What is the multiplier formula in casino Dice?

The multiplier formula is: Multiplier = RTP ÷ (win chance ÷ 100). Royal Dice uses 99% RTP. So at 50% win chance: 0.99 ÷ 0.50 = 1.98×. At 10% win chance: 0.99 ÷ 0.10 = 9.90×. At 2% win chance: 0.99 ÷ 0.02 = 49.5×. The higher the risk (lower win chance), the higher the multiplier — but the expected return per bet stays constant at the 1% house edge regardless of which win chance you choose.

What is the difference between Roll Over and Roll Under in Dice?

Roll Over wins when the rolled number is higher than your target. Roll Under wins when the rolled number is lower than your target. Both directions are valid at any win chance setting — they produce mirror-image winning ranges. For example, at 50% win chance: Roll Over wins numbers above 50, Roll Under wins numbers below 50. The multiplier and house edge are identical for both directions at the same win chance.

What is the Lucky Multiplier in Royal Dice?

The Lucky Multiplier is a bonus feature in Royal Dice that activates randomly (approximately 30% of rolls) and applies an additional multiplier of 2×–10× on top of your normal payout. It is generated at the start of each roll — before the result is known — adding a surprise bonus layer. The Lucky Multiplier does not change the base house edge; it is funded within the existing RTP structure.

What is the house edge of casino Dice?

Royal Dice has a 1% house edge (99% RTP). This applies equally at every win chance setting — 2% win chance or 98% win chance, the expected return per bet is identical. The house edge is embedded in the multiplier formula: fair odds would give 1 ÷ win% as the multiplier, but the 1% house edge reduces it to 0.99 ÷ win%. This makes casino Dice one of the most player-friendly casino game formats available.

What is the Combo streak in Royal Dice?

Royal Dice's Combo system rewards consecutive wins with increasing multipliers. The Combo multiplier reaches ×2 at 4 consecutive wins, ×4 at 8 wins, and ×8 at 16 wins. The Combo multiplier stacks on top of your normal win multiplier and any Lucky Multiplier. The Combo resets to ×1 on any loss. It rewards consistent play at any win chance setting.

What win chance should I use in Dice?

Win chance choice in casino Dice is a volatility preference — all settings have the same 1% house edge. High win chance (50–98%): frequent small wins, smooth bankroll, long sessions. Medium win chance (20–49%): balanced wins and losses, moderate excitement. Low win chance (2–19%): rare large wins, significant losing streaks, high variance. For beginners, 40–60% win chance provides a near coin-flip experience that is easy to understand.

How to Play Dice Casino Game — Roll Over Under Rules, Multiplier & Strategy

The Basics

How Casino Dice Works

Casino Dice operates on a number line from 0 to 100. You select a target number using the win chance slider — this sets what percentage of the number line you're covering. Then you choose a direction: Roll Over (win if the result is above your target) or Roll Under (win if the result is below your target).

A random number is generated. If it falls in your chosen zone, you win: bet × multiplier. If it doesn't, you lose your bet. That's the complete game — no cards, no phases, no decisions after the roll.

Example: 40% Win Chance, Roll Over

Lose zone (60%)

Win zone (40%)

0 25 50 Target: 60 ▲ 75 100

In this example: win chance is 40%, the target is 60, Roll Over is selected. You win if the result is above 60 — that's 40% of the 0–100 range. The multiplier at 40% win chance on 99% RTP is 0.99 ÷ 0.40 = 2.475×. A 10-coin bet pays 24.75 coins if it wins.

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Roll Over vs Roll Under — are they different? No. At the same win chance setting, both directions produce identical multipliers and identical house edge. Roll Over at 50% and Roll Under at 50% are mathematically equivalent. The direction you choose is purely a preference for which half of the number line you want to cover.

Roll Over & Roll Under

Roll Over vs Roll Under — Rules Explained

▲

Roll Over

You win when the rolled number is higher than your target threshold. The winning range extends from your target to 100.

Target 60, Roll Over → any result from 60.01 to 99.99 wins. Win chance: 40%.

▼

Roll Under

You win when the rolled number is lower than your target threshold. The winning range extends from 0 to your target.

Target 40, Roll Under → any result from 0 to 39.99 wins. Win chance: 40%.

The win chance is always the percentage of the 0–100 range that falls within your winning zone. At 50% win chance, Roll Over sets target at 50 and wins above it; Roll Under sets target at 50 and wins below it. Both win exactly half the time.

In Royal Dice, you select your win chance first using the slider (2–98%), and the game automatically places your target accordingly. You can then toggle between Over and Under without changing your win chance percentage.

Step by Step

How to Play Royal Dice — One Round

1

Set your win chance (2–98%)

Use the slider to choose your win chance. Moving it toward 2% gives a rare, high-multiplier bet. Moving it toward 98% gives a frequent, low-multiplier bet. The multiplier updates in real time as you adjust the slider.

2

Choose Roll Over or Roll Under

Select which direction you want to bet. Both produce the same multiplier at the same win chance — this is purely a preference choice. Royal Dice defaults to Roll Over with the target number displayed.

3

Set your bet amount

Choose your wager using the chip buttons or manual entry. Quick preset chips (1, 5, 10, 50, 100) let you bet fast. The potential win is shown as: bet × multiplier.

4

Press Roll

A random number between 0 and 100 is generated. The dice animation plays and the result appears. If the number falls in your win zone, you receive bet × multiplier (plus any Lucky Multiplier or Combo bonus). If not, your bet is lost.

5

Collect or roll again

Your balance is updated immediately after each roll. Each roll is an independent event — the previous result has no bearing on the next. You can change your win chance, direction, or bet amount between any two rolls.

The Math

Multiplier Formula — Win Chance vs Payout

The multiplier in Dice is determined by one formula:

Multiplier = RTP ÷ (Win Chance ÷ 100)

Royal Dice uses 99% RTP (1% house edge). So the multiplier at any win chance is simply 0.99 divided by the win chance as a decimal. The higher the risk (lower win chance), the higher the multiplier — but the expected return per bet stays at 99% regardless of which win chance you choose.

98%

1.01×

Very safe · tiny wins

75%

1.32×

High chance · small boost

50%

1.98×

Coin-flip · near 2×

33%

3.00×

1 in 3 chance

20%

4.95×

1 in 5 chance

10%

9.90×

1 in 10 chance

5%

19.8×

1 in 20 chance

2%

49.5×

Maximum risk

Win chance, multiplier, and expected return table for Royal Dice (99% RTP)
Win Chance	Multiplier	Win Frequency	10-coin payout on win	Expected return / roll
98%	1.01×	~98 in 100	10.1 coins	9.9 coins (−1%)
75%	1.32×	~75 in 100	13.2 coins	9.9 coins (−1%)
50%	1.98×	~50 in 100	19.8 coins	9.9 coins (−1%)
33%	3.00×	~33 in 100	30 coins	9.9 coins (−1%)
10%	9.90×	~10 in 100	99 coins	9.9 coins (−1%)
5%	19.8×	~5 in 100	198 coins	9.9 coins (−1%)
2%	49.5×	~2 in 100	495 coins	9.9 coins (−1%)

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The equaliser: Every row returns exactly 9.9 coins on a 10-coin bet in the long run — the 1% house edge, unchanged across all settings. Choosing 2% win chance doesn't give you worse or better expected value than 98%. It gives you the same value distributed very differently: rare 49.5× wins vs frequent 1.01× wins. Choose based on the experience you want.

Royal Dice Exclusive

Royal Dice Features

Royal Dice adds several mechanics on top of the core Roll Over/Under framework that change how sessions play out.

✨

Lucky Multiplier

Activates randomly on ~30% of winning rolls. Applies a 2×–10× bonus multiplier on top of your normal win. Generated at roll start — adds surprise without changing base odds.

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Combo Streak

Consecutive wins build a Combo meter. ×2 at 4 wins, ×4 at 8 wins, ×8 at 16 wins. Combo multiplier stacks with your base win and Lucky Multiplier. Resets on any loss.

🤖

Auto-Roll

Continuous rolling at your current settings. Set Stop Win (auto-stop when balance reaches a target) and Stop Loss (auto-stop if balance drops below a threshold). Essential for hands-free sessions.

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Heat Map

Visual display of where the last 50 rolls landed on the 0–100 number line. Shows which zones have been hitting recently — useful for visual feedback, though each roll is independent.

🎁

Near-Miss System

When the roll lands just outside your win zone, a near-miss animation plays and a consolation bonus is awarded — keeping the tension high even on close calls.

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Daily Goals & Ranks

Daily and weekly targets reward consistent play. Rank progression unlocks across 7 levels. All tracked locally — no account needed.

Combo Streak — How It Builds

W1

×1

›

W2

×1

›

W3

×1

›

W4

×2 🔥

›

W5–7

×2

›

W8

×4 🔥🔥

›

W9–15

×4

›

W16

×8 🔥🔥🔥

›

LOSS

reset

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Combo strategy: The Combo multiplier rewards consistency. At high win chance (e.g. 70–80%), win frequency is high enough to realistically build streaks to 4+ wins. At low win chance (e.g. 5%), streaks are rare and the Combo rarely activates. For maximum Combo value, use a win chance of 50–75% — frequent enough wins to build streaks, with a meaningful multiplier on each win.

Which Setting to Choose

Win Chance Guide — Matching Your Play Style

Since all win chance settings carry the same 1% house edge, the best setting is the one that matches how you want to experience the game.

Win chance recommendations by play style
Play Style	Win Chance	Typical Multiplier	Why
Beginners	50%	1.98×	Near coin-flip probability — easy to understand. Win about half the time. Good for learning the game's feel.
Long sessions	75–90%	1.10–1.32×	High win frequency keeps the session going. Bankroll drains slowly. Low excitement but maximum play time.
Balanced play	40–60%	1.65–2.47×	Good balance of win frequency and multiplier size. Suitable for Combo streak building.
Chase big wins	10–20%	4.95–9.90×	Wins are infrequent but meaningful. Longer losing streaks between wins — keep bets small.
Maximum thrill	2–5%	19.8–49.5×	Rare wins, large payouts. Expect long runs without winning. Use very small bet sizes — 0.5–1% of balance per roll.

⚙️

Auto-Roll Stop Loss tip: When using Auto-Roll at low win chance (under 20%), always set a Stop Loss limit. At 5% win chance, runs of 20+ consecutive losses are mathematically normal. Without a Stop Loss, auto-roll can empty your balance before a win occurs. A Stop Loss at 20–30% of your session budget is a reasonable safeguard.

Quick Reference

Dice Terms Glossary

Casino Dice glossary
Term	Definition
Win Chance	The percentage of the 0–100 number line covered by your winning zone. Set via the slider (2–98%).
Roll Over	Win if the result is above your target number. Win zone: target → 100.
Roll Under	Win if the result is below your target number. Win zone: 0 → target.
Target Number	The threshold that divides the winning and losing zones. Automatically calculated from your win chance and direction.
Multiplier	Your payout factor on a win. Formula: 0.99 ÷ (win chance ÷ 100). Higher risk = higher multiplier.
House Edge	Royal Dice: 1% (99% RTP). Constant across all win chance settings — choosing 2% vs 98% doesn't change your expected loss rate per bet.
Lucky Multiplier	A random bonus multiplier (2×–10×) applied on ~30% of winning rolls in Royal Dice.
Combo	Consecutive win streak bonus in Royal Dice: ×2 at 4 wins, ×4 at 8 wins, ×8 at 16 wins. Resets on any loss.
Auto-Roll	Continuous rolling at fixed settings. Set Stop Win and Stop Loss to control automated sessions.
Stop Win	Auto-Roll halts when your balance reaches this target. Locks in session profits automatically.
Stop Loss	Auto-Roll halts if your balance drops to this level. Prevents runaway losses on long losing streaks.
Provably Fair	Cryptographic system allowing players to verify each roll's result was genuinely random and unmanipulated.
Near-Miss	A result that falls just outside the win zone. Royal Dice shows a special animation and consolation reward.
Heat Map	Visual display of the last 50 roll results on the 0–100 number line. For visual feedback only — rolls are independent.