This is so cool! I also tried replicating Incredibots during the pandemic, but abandoned it in favor of 3d stuff.
I remember every day as a kid logging on to find new vehicles, challenges, rube-goldberg machines. Some content archives are still online, but don't scratch that itch as an adult. For its time, Incredibots really nailed the sweet spot between expressiveness and ease to create content.
It's so cool to see people talking about Incredibots here, I also learned about Box2D from it back then, and it immediately came to mind when I saw the Box3D samples app.
I spent many of my teenage and early adult years trying to replicate it in HTML5. Finally got the Open Source version of IB2 largely ported during COVID: https://github.com/JoshTheDerf/Incredibots-2-HTML5-Open-Sour...