You can make simple dice rolls from the chat window by typing a line starting with "/roll" or "/r". The grammar supported by the chat window is somewhat limited. It's really meant for just simple rolls, and for anything else you'd use the dice roll builder and save the roll. However, it can be handy for quick ad-hoc rolls. Rather than geeking out on you with a dice roll grammar, I'm going to do this by example, starting with the simplest possible roll and building from there. I'm going to use /roll for all of these, but /r works just as well.


Note that all these rolls and much more can be created from the graphical dice roll builder and saved in the dice roll gallery for later use. There's definitely a limit to how crazy you want to go with entering dice rolls textually like this. If you're going to do this though, remember that you can recall past chat message using the up and down arrow keys, so you don't have to type all this every time.


A note about the Version Introduced column: All the "COMING SOON" rolls are already working in the 2.0 release under development. My plan is to backport these rolls to 1.3.6 in the next few days (late December 2016). The Hero System rolls will have to wait for 2.0. They actually work, in terms of the calculations. However, they don't render properly, and that might take some doing. Also, Hero System scares me. ;) I might be opening up Pandora's Box...


Text You Enter Dice Roll Version Introduced
/roll d20 1d20 1.0
/roll 1d20 1d20 1.0
/roll 1d20+5 Rolls 1d20, adds 5, and presents the sum. 1.0
/roll 2d6-3 Rolls 2d6, subtracts 3, and presents the sum. 1.0
/roll 5d4 drop 4s Rolls 5d4, drops all 4s, and sums the rest. 1.0
/roll 4d6 drop lowest
Rolls 4d6, drops the lowest value, and sums remaining 3 values. 1.0
/roll 8d4 drop lowest 2
Rolls 8d4, drops the lowest two values, and sums the rest. 1.0
/roll 8d4 drop 2
Rolls 8d4, drops the lowest two values, and sums the rest.
1.3.6
/roll 6d6*
Roll 6d6, "exploding" 6s (that is, rolling an additional die every time a 6 is rolled) and sum them all up.
Exploding die values are always summed in the positive direction. Some games explode 1s to subtract values from the roll. This is not currently supported.
1.0
/roll 20d6 > Roll 6d6 and sort them from highest to lowest. Does not sum them. Intended for dice matching/comparison mechanics, such as that used by Sorcerer. Note that there's a space between the die number and the >. 1.3.5
/roll 20d6 < Roll 6d6 and sort them from lowest to highest. Does not sum them. Intended for dice matching/comparison mechanics, such as that used by Sorcerer. Note that there's a space between the die number and the <.
1.3.5
/roll 4d6 keep 3 Roll 4d6, keeps the highest 3 values and sums them.
1.3.6
/roll 4d6 keep highest 3 Roll 4d6, keeps the highest 3 values and sums them. 1.3.6
/roll 4d6 reroll 1s Roll 4d6, reroll any 1s, sums the resultant dice.
1.3.6
/roll 4d6 explode 3s Roll 6d6, "exploding" 6s (that is, rolling an additional die every time a 3 is rolled) and sum them all up.
This is equivalent to using the asterisk, except that the asterisk always explodes on the high value of the die, whereas this form allows you to specify any value as exploding.
As with the asterisk, exploding die values are always summed in the positive direction. Some games explode 1s to subtract values from the roll. This is not currently supported.
1.3.6
/roll 4d6 count 1,2,3 Roll 4d6 and count the number of successes, where a success is a 1, 2, or 3. 1.3.6
/roll 4d6 count 5,6 Roll 4d6 and count the number of successes, where a success is a 5 or 6.
1.3.6
/roll 6d6* count 5,6
Roll 6d6, explode 6s and count successes, where a success is a 5 or 6. 1.3.6
/roll 6d6* count 5,6 +10
Roll 6d6, explode 6s and count successes, where a success is a 5 or 6. Then add 10 and sum. Shadowrun uses a roll like this for initiative.
1.3.6
/roll 8d10 explode 9,10 count 7,8,9,10
Roll 8d10 and count the number of successes, where a success is a 7, 8, 9, or 10.
This roll mixes multi-value exploding and success counting. New World of Darkness uses such a roll.
1.3.6
/roll 4d6 HeroND Roll 4d6 and apply Hero System "normal damage" rules for stun and body damage COMING in 2.0
/roll 4d6 HeroKD
Roll 4d6 and apply Hero System "killing damage" rules for stun and body damage
COMING in 2.0