The following is a list of non-NPM assets used and their attribution.
JavaScript Animated D6 Dice Roller by Michael K. Eidson, CC0 1.0
Settlers Tile by Ryan Schenk, CC BY-NC-SA 3.0
Retina Wood by Atle Mo, CC BY-SA 3.0
Dark Stripes by Stefan Aleksić, CC BY-SA 3.0