The highest of the rolled die. (That part I figured out at least.)
Thanks so much for looking into this Geoff, longtime listener of Ludology btw, always impressed by your thoughts on design.
Thanks for the kind words! To encourage this kind of behavior, here's a file that should get you most of what you want. You can specify any number of red D6, D8, D10, yellow D6, D8, D10, green D6, D8, D10, and defense D6's. It does NOT do the bonus stuff.
I didn't 100% vet this, but I think it should be right.
https://drive.google.com/file/d/1_HQRUsq72dFo_BHu3_ZbfhlbSB0xQkoe/view?usp=shari...
Please let me know how it looks!
EDIT: Quick note - I just looked at your original post and see that ties should go to the attacker. Here they go to the defender. To fix that just take out the +1 I add to the Defender highest die.
Huh. Yeah, I'm definitely getting results. Here's a histo for 2xred D6, 1 yellow d6, 1 yellow d8, and 2 green d10s vs 2 defense. Here's a link to that specific file in case something got messed up: https://www.dropbox.com/s/0882a9q6w895w8h/Red-Green-Yellow.mcd?dl=0
Ah yup that did it! Thanks so much for the help.
(I do still have this strange issue where copying anything, with ctrl+C or the button in the edit menu, crashes the program immediately. Strangely, even after re-installing, this happens on my desktop pc, not my laptop. Not a big deal, I just use it only my laptop, but let me know if you want the crash logs or anything. I'm guessing this doesn't happen to most people so not too worried about it.)