* Base kart - current version (standard-mk8) licensed under CC-BY-SA 4.0:
* The new, Mario Kart 8 inspired, base kart is based on content from <https://blendswap.com/blend/12954>; originally created by Diro, but labelled as 'fan art'. This version is licensed under the Creative Commons Attribution 3.0 Unported (CC BY 3.0).
* The old base kart is based on content from <https://opengameart.org/content/racing-kart> - my changes to it are not subject to non-commercial restrictions; original version by Keith at Fertile Soil Productions. This version is licensed under the Creative Commons Zero 1.0 Universal (CC0 1.0) Public Domain Dedication.
The icons for the Smash fighters can be found at and at <https://www.spriters-resource.com/nintendo_switch/supersmashbrosultimate/>, ripped by Random Talking Bush.