Pyglet have support for headless mode though EGL. This will only work on linux, but it's a good start allowing users to run arcade applications on linux servers.

@gaorkl requested this feature and started experimenting with some success: https://github.com/gaorkl/hlarcade

It seems to be somthing we can achieve without too much trouble, but we might need a different entrypoint for this. Headless don't have window or other input events, so the interface is pretty simple.