actfap

Free Dice

Roll under or over a target you set, played for chips that are worth nothing, with the win chance, the multiplier and the cost shown before every roll.

Play chips

1,000

No real money, no prizes, nothing to buy.

House edge 1%

The same at every target, under or over.

No roll yet

Roll under 50.00 to win

Set a bet and a target, then roll.

Bet0

Roll under takes a target from 1.00 to 98.00. Enter rolls. Every roll is one press: this table has no automatic betting.

Session coach

Last round

Nothing played yet. After each of your rolls the coach says what the round cost and what decided it.

Decide the cost before you start

Gambling is entertainment with a price, like a concert ticket. The useful question is not how much you might win but how much the evening is allowed to cost. Pick that number first, and treat reaching it as the end of the session. You can set one below and the coach will hold you to it.

Next bet

No bet lined up. Once there is one, its expected cost shows here before you play it.

This table is for practice and entertainment only. How to keep gambling safe

What this target costs

Win chance
50%
5,000 of 10,000 rolls
Multiplier
1.9800x
No bet
Expected cost per roll
0
No bet
House edge at this target
1%
The multiplier and the house edge at a range of win chances
Win chanceMultiplierHouse edge
90%1.1000x1%
75%1.3200x1%
50%1.9800x1%
25%3.9600x1%
10%9.9000x1%
1%99.0000x1%

The slider trades how often you win against how much. Move the target toward a near-certain win and the multiplier shrinks toward the bet itself. Move it toward a long shot and the multiplier grows, in exact proportion, so the two always cancel. The cost of a roll never moves: it is the house edge times the bet at every target, under or over. The slider picks the shape of the session, never its price. See what a long-shot target does to a session's swings

Recent rolls

No rolls yet.

Each one was rolled fresh. They say nothing about the next roll.

This session

Rolls
0
Chips staked
0
Net chips
0
Expected at this edge
0
Rolls per minute
–
Shown after a few rolls
Expected cost per 100 rolls
0
No bet

Expected is the house edge taken on every chip you have staked. A short session swings well away from it in both directions, and the faster the rolls go, the sooner the total staked adds up.

Built by Alexander Korsager · last updated October 4, 2026 · corrections

House edge at every target, under or over
1%
Equally likely rolls, 0.00 to 99.99
10,000
The likeliest win a target can have
98%
The most a rounded-down multiplier adds to the cost
0.01%

01 / 03

A table that shows how a bet is priced

Dice is about as simple as a casino game gets, which makes it a clear place to see how one is priced.

A roll is a number from 0.00 to 99.99. You choose a target and a side, under or over, and the table tells you exactly how often that wins and what it pays. Slide the target and the two figures move against each other: a likelier win pays less, a longer shot pays more.

Every roll from 0.00 to 99.99, and the ones that win
  • Roll under 50.0050%

    5,000 winning rolls, paid 1.9800x

  • Roll over 49.9950%

    5,000 winning rolls, paid 1.9800x

  • Roll under 10.0010%

    1,000 winning rolls, paid 9.9000x

Each bar is all 10,000 rolls, low on the left. A likelier win pays less and a longer shot pays more.

What never moves is the cost: the multiplier is calculated straight from the win chance, so a 50% chance paying 1.9800x costs exactly what a 10% chance paying 9.9000x costs: 1% of the bet gone on average, 99% handed back either way.

That number is fixed; the one that moves with you is speed. The table prices your current target before you roll, and the counter beneath it turns rolls per minute into the only variable left: how quickly you feed the edge your money.

Chance times multiplier
Win chancePaysBack on average
1%99.0000x99%
10%9.9000x99%
50%1.9800x99%
98%1.0102x99%

The multiplier is 99 divided by the win chance in percent, so the cost is the same 1% of the bet on every row.

02 / 03

Rules at this table

  • Roll under

    Wins when
    The roll is below your target
    Exactly on the target
    Loses
    Targets
    1.00 to 98.00
    Win chance
    1% to 98%

    Paid at 50.00

    1.9800x

    A 50% win chance, the same on both sides

  • Roll over

    Wins when
    The roll is above your target
    Exactly on the target
    Loses
    Targets
    1.99 to 98.99
    Win chance
    1% to 98%

    Paid at 49.99

    1.9800x

    A 50% win chance, the same on both sides

  • Bet up to 500 chips on a roll.
  • A roll is a number from 0.00 to 99.99. All 10,000 are equally likely.
  • A win pays the bet times the multiplier, which is 99 divided by the win chance in percent, from 1.0102x at the likeliest target to 99.0000x at the longest.
  • Switching between under and over keeps your win chance and moves the target to match.
  • Every roll is one press. The table has no automatic betting.
  • Your bet and your target stay in place for the next roll until you change them.

FAQ

Is this dice game played for real money?
No. The table uses play chips that have no value, cannot be bought, and cannot be cashed out or exchanged for anything. If you run out, you are handed another stack for free. There is no account and nothing to download.
What is the best target in a roll under or over dice game?
There is not one. The multiplier is calculated from the win chance, so the two cancel: a 50% chance pays 1.9800x, a 10% chance pays 9.9000x, and every target costs 1% of the bet on average. A likely target gives many small wins and the occasional loss of the whole bet. A long shot gives long losing runs and a rare large win. The cost is identical. Only the shape of the session changes.
Is roll over better than roll under?
No. At the same win chance they pay the same multiplier and cost the same. Under wins on the low numbers and over wins on the high ones, and every number is as likely as every other. Switching sides at this table keeps your win chance exactly where it was.
Do the recent rolls help predict the next one?
No. Every roll is drawn fresh, with the same odds as the one before. A run of high numbers does not make a low one due, and a losing run does not make a win more likely. The list of recent rolls shows what has happened and nothing about what will.

How this game works

Your browser draws one of 10,000 equally likely numbers for each roll. The win chance is the count of winning numbers out of 10,000, and the multiplier is 99 divided by that chance in percent, so the chance of winning times the multiplier is 99% at every target: a house edge of 1%.

The multiplier is paid to 4 decimal places and always rounded down, never up. Where it does not divide evenly, that rounding costs a little more on top of the 1% edge: never more than 0.01% of the bet at any target, and nothing at all at many of them, including the 50.00 the table opens on.

The table's tests check this without sampling. For every target the table allows, in both directions, they count the winning numbers across all 10,000 rolls and confirm, in whole-number arithmetic, that the return is never above 99% and never below it by more than the rounding.

The expected cost of a roll is the house edge multiplied by the bet. The session figure is the same sum over every roll you have made, and the pace is the number of rolls made since your first one, divided by the time they took. To set this edge beside other games, see the house edge comparison.

Limits

  • The 1% edge is this table's setting. Dice games elsewhere publish different edges, and some count the possible rolls differently, which changes the cost.
  • Each roll is independent. The table does not model a strategy of changing the bet or the target after a win or a loss, and no such strategy changes the edge.
  • The roll is drawn by your browser's ordinary random number generator. It is not a provably fair scheme and there is no seed to verify.
  • Play chips do not feel like money, and a fast game is easier to stop here than it is with a real stake.

This is a practice game for adults. It has no real-money play and links to none. Dice played for money has the same house edge on every roll, and no target or direction removes it.

Gambling can cause serious harm. The National Problem Gambling Helpline is free, confidential and open 24/7, call or text 1-800-MY-RESET (1-800-697-3738), or chat at ncpgambling.org/chat.

03 / 03

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