Online Dice
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Roll 4d20 online – 4 20-sided dice










MODIFIERS
Add bonuses, penalties or multipliers. They apply from top to bottom.




4d20 · 4 separate 20-sided dice

Four D20s build a twenty-entry encounter recipe 🐉

Four twenty-entry tables can choose a location, a creature or character, a motivation, and a complication. This is a worldbuilding use for a familiar die, rather than four attacks that need to be added together.

🍜 Even an ordinary result starts looking suspicious

D20 illustration — 4 × D20
4 D20 results, compact enough to keep the table readable.
⚔️ Scene from the desk

Four D20s create enough drama that at least one perfectly normal result will feel suspicious.

Raw range4–80
Dice in the tray4 × D20
Long-run mean42

Something wants something in the wrong place

Write twenty entries in each list. The example selects location three, visitor seventeen, motivation eight, and complication twelve. Start with what the visitor wants, then use the other details to decide why the encounter is awkward.

Location3
Visitor17
Motivation8
Complication12

Raw sum3 + 17 + 8 + 12 = 40

Forty-two is central to the encounter-recipe sum

Theoretical total distribution for 4d20480Most combinations: 42
Selected totals · 4d20
TotalOrdered setsChance, rounded
410.000625%
425,3403.34%
8010.000625%

Standard independent-dice model: 160,000 ordered outcomes. Percentages are rounded.

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