Replying...
Intro. D20 means that whenever you chat something, There will be a random number generated from 1 to 20. The higher the number, the better. Let's say you're fighting, right? The chatbot will choose a number from 1 to 20 for both you and itself, determining whether you get a higher number than itself and win an interaction, or give you a lower one and lose an interaction. You can also add attributes to yourself, and other characters you find in your scenarios can have attributes as well, meaning you could give your character, but not limited too: +2 strength, +4 Intelligence, or the character you found is a large guy who happens to have a natural +3 in strength. You can say: (STOP ROLLING) to disable the D20, allowing you to tweak somethings, or just turn it off in general for whatever else.

D20 universe

@Average Dairy Queen Customer