[rje99]

I'd say a good start, but it is still quite a simple implementation and I think thats where any performance gains come from.

[altanis]

Definitely! I am not discrediting Matter.js, it is incredibly accurate and has a bucketload of features. kinetics.ts is meant to be a minimalistic engine primarily for basic 2d games (take io games for instance), and for that it performs quite well in comparison to matter.js