Dice roll

From NWNWiki

In Pnp actions and happenings are decided by one or more dice rolls
In NwN these dice rolls are replaced by the random generation of a number.

Most combat actions require the roll of a d20. If it lands on a 1 (natural one) this marks an automatic failure. If it lands on a 20 this marks an automatic win.
For example: fortitude save 1 + 7 vs DC-5 would result in a failed fortitude save, even though you beat the DC

[edit] Examples

• 1d6 means you roll one single d6 or six-sided die, the outcome of this roll will be a random number between 1 and 6.
• 2d4 means you roll two d4 or four-sided dice. The outcome will be a random number between 2 and 8.

[edit] Notes

• Sometimes the NwN engine multiplies one roll instead of repeating it. 4d2 could then give: 4 or 8 as an outcome, not the values in between.