http://arstechnica.com/gaming/2015/01/playstation-now-review...
http://arstechnica.com/gaming/2015/07/hands-on-with-playstat...
http://shield.nvidia.com/grid-game-streaming
But maybe it's not quite what you want, since it's limited to their games. Never personally tried it though.
Frame has a platform offering if you want to setup some other virtual world or game.
I guess I should do a Show HN, but it just hasn't been a priority with working out the kinks.
1. https://fra.me
2. http://brightcanopy.com