Roll Modifiers

A modifier goes right after a dice term, with no space. Several apply in the order written: 4d6r1kh3 rerolls ones, then keeps the highest three.

In text output each die is marked: ! exploded, * a success, _ a failure, and a die in round brackets was dropped or rerolled and does not count.

Keep and drop

Modifier	Does
`kh<n>`, `k<n>`	keep the highest n dice; n is 1 if left out
`kl<n>`	keep the lowest n
`dl<n>`, `d<n>`	drop the lowest n
`dh<n>`	drop the highest n

> think roll(4d6kh3,,text)
4d6kh3[5, (2), 4, 6] = 15
> think roll(2d20kl,,text)
2d20kl[(17), 8] = 8

Output: the dropped die is in round brackets. Keeping more dice than were rolled keeps them all, so 2d6kh3 is just two dice.

Reroll and explode

Modifier	Does
`r`	reroll once each die showing its lowest face
`rr`	keep rerolling until the die no longer shows it
`x`	a die showing its highest face adds another die, which can do the same
`xo`	as `x`, but only the dice first rolled add more
`x<n>=<face>`	explode on that face, adding at most n dice

> think roll(4d6r1kh3,,text)
4d6r1kh3[(1), 4, 5, (3), 6] = 15
> think roll(3d6x,,text)
3d6x[6!, 3, 2, 4] = 15

Output: the 1 was rerolled into a 4, then the 3 was dropped. The 6 exploded and added the 3 after it. One die explodes or is rerolled at most 100 times in a row.

Count successes

Modifier	Does
`cs`	the total is how many dice show their highest face
`cf`	the total is how many dice show their lowest face
`df`	each die showing its lowest face takes 1 away
`sf`	each failing die takes its own face away
`even`, `odd`	count even or odd dice as successes
`ms<n>`	the total minus n (`ms<n` gives n minus the total)

> think roll(10d10cs>=8,,text)
10d10cs>=8[3, 9*, 8*, 1, 10*, 4, 2, 7, 8*, 5] = 4
> think roll(5d10cs>=8df1,,text)
5d10cs>=8df1[9*, 1_, 8*, 4, 10*] = 2
> think roll(1d20ms>=15,,text)
1d20ms>=15[18] = 3

Output: in the second roll three successes less one failure leave 2. In the third, 18 beat 15 by 3.

Limit a face

Modifier	Does
`min<n>`	a die below n counts as n
`max<n>`	a die above n counts as n
`c<n>`	a coin’s call: `3dcc1` counts heads, `3dcc0` tails

> think roll(4d6min2,,text)
4d6min2[2, 5, 2, 3] = 12

Output: the two 1s counted as 2.

Choosing faces

x, xo, r, rr, cs, cf, df, sf and ms can name the faces they act on: a number (r2), or a comparison with =, >, >=, < or <= (x>=9, cs>=8, sf<3). The number may be a bracketed formula, such as cs>=(@difficulty).

::: seealso