Thanks @vento, it was fun to write. The real star is Carodan who did all the artwork. I just know how to code and ship software.
Thanks. That's all down to Dan (https://sketchfab.com/carodan). He's an amazing artist. So much so that for our Robots and Zombies game jam entry people downvoted us because they thought we'd just dropped in some asset store assets when in fact almost all of the artwork was done by Dan!