Electron's bad performance really poisoned that well early on.

Gameface's architecture is described in its documentation: https://docs.coherent-labs.com/unity-gameface/integration/te...

Most of its divergence from browser implementations are unsurprisingly in font rendering, which is generally a headache in games anyway: https://docs.coherent-labs.com/unity-gameface/integration/op...

And in RTL text rendering: https://docs.coherent-labs.com/unity-gameface/integration/op...

The Javascript DOM API is a subset, but pretty rich considering: https://docs.coherent-labs.com/unity-gameface/api_reference/...