→ http://www.gamingonlinux.com/articles/unity3d-web-player-in-linux-browsers-thanks-to-pipelight-.2996
→ http://pipelight.net/cms/install/installation-ubuntu.html
→ http://pipelight.net/cms/plugin-unity-webplayer.html

sudo add-apt-repository ppa:pipelight/stable
sudo apt-get update
sudo apt-get install –install-recommends pipelight-multi
sudo pipelight-plugin –update
sudo pipelight-plugin –enable unity3d