I believe the consensus was that multiplayer requires WebRTC, which CocoonJS doesn't support. Crosswalk, on the other hand, does, so you should be able to run such games on Android through Crosswalk, at least.
From the blog post:
[quote:28w1emqw]Which platforms are supported?
Currently only Chrome 32+ and Firefox 27+ support interoperable WebRTC DataChannels. However this also includes the mobile browsers and other Chromium and Firefox based platforms, such as node-webkit, Crosswalk and Firefox OS. Hopefully other vendors who have Chromium-based platforms like Blackberry, Amazon and Tizen will also be able to add support by updating the version of Chromium they use. Other browsers such as Safari and Internet Explorer do not have any support yet, but as with all new web platform features, hopefully support will arrive in future.