[_delirium]

I don't think there will be a wholesale replacement of AAA game engines with JS-based engines, but I do think JS-based engines will encroach more and more on AAA territory from the bottom up, as the visual-fidelity differences between AAA games and web/mobile/etc. games narrow. I know of at least one AAA-level game company that's working in-house on a WebGL-based game engine to hedge their bets, and currently debating what should be deployed on that platform. I would guess others are looking into it as well.