Arcade's primary focus is on being an educational tool for beginner programmers, so my hope is that with browser compatibility we can lower the barrier to entry further and make it more accessible and easy to get started with. In a similar vein to the goals of browser compatibility, we've recently enabled full compatibility with Raspberry Pi through the use of OpenGL ES(and this was largely only possible thanks to the huge amount of work that everyone involved in the Mesa project puts in)
I'm not the original author of Arcade, but I am a current maintainer and put a substantial amount of time into it and it's community.
[1] - https://github.com/pythonarcade/arcade [2] - https://github.com/pyglet/pyglet [3] - https://github.com/pythonarcade/arcade-web