Rnadom

User:Fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff made it

commands

q: tape head := random(0,9) //also different from the current cell
{: if tape head < 1 skip to matching "}"
}: tape head decrement; if non-negative skip to matching "{"
r: move tape head right
~: print amount of problems as a number
l: move tape head left
>: get input as a number (put -1 on invalid number)
\: print tape head as roman numeral
#: halt
": jump to next newline
all other commands add a problem to the cell
10 problem = death to a cell and if you do anything with it the program outputs either "💥" or "10"

programs

XKCD Random Number

xkcd~

Actual Random Number

q{+}~

Infinite Loop

q{rq}

truth machine

>{!rq{rq}}~

Cat program

>{+}~

only works from 0 ~ 9

polyglot

v='!iiiso~#::=hF'; print(9); p='''
>9.@::=F
Number::=~9
::=
Number'''

Works in Rnadom, Befunge, Thue, Deadfish, Python, and Deadfish~. Prints the string "9" to the console.

Read Input forever

q{{}qr>l}