There is no support unity3d web-player for Linux, that not crossplatformed game. Java or flash or html5 - support cross platform, but not unity3d, it's pity
It IS a pity! Especially because we too love us some Linux. Fear not! Unity 4.0 introduced support for Linux; so just as soon as we're able to update to 4.0 you'll have BigHead BASH, Crazy Fairies and Akaneiro right at your little apt-get fingertips. Yay!
I have those both written down for any future editions. Thanks for playing.