Most web-based games will probably remain to be in 2D (for multiple reasons, including development cost and accessibility), but 3D games on the web are certainl

Most web-based games will probably remain to be in 2D (for multiple reasons, including development cost and accessibility), but 3D games on the web are certainly performant enough. To give one example, bananabread is a tech demo showing off what can be done with asm.js and WebGL (performance is likely to get even better with WASM): http://kripken.github.io/misc-js-benchmarks/banana/index.html http://kripken.github.io/misc-js-benchmarks/banana/index.htm... As for whether a VM has an overhead compared to native, of course it does, but you're not going to convince anyone of your viewpoint by stating something that's already obvious to us all. The performance of web-based games doesn't have to be the best, it just has to 'good enough'. I personally don't think we'll fast adoption of WebVR, but I'm glad it exists as it helps to have it as a goal to improve 3D performance, almost certainly leading to reducing the performance overhead of browsers (as low latency is a key component of a good VR experience).