Before digging into every facet of this post, you are required to have a fairly good background of Meteor and Unity3D.
What is Unity3D?
Unity is a cross-platform game engine developed by Unity Technologies and used to develop video games for PC, consoles, mobile devices and websites. First announced only for OS X, at Apple’s Worldwide Developers Conference in 2005, it has since been extended to target 24 platforms.
What is Meteor JS?
Why we should use Meteor with Unity3D?
How to connect MeteorJS with Unity3D
A team in Los Angeles have developed a plugin that make a bridge between Unity3D and MeteorJS through Websocket and DDP. You can find it here https://github.com/hiddenswitch/Meteor-Unity. By using this plugin we can use almost Meteor API such as: login, method, collection, publish/subscription. The plugin is great in general but one thing, it hasn’t supported WebGL for Unity3D yet.