For the Linux build, it seems you forgot to include the UnityPlayer.so file, so it can't run.
Hmm, that's odd. It's right there when I download it. Really weird that it doesn't run for you though, I've seen it played before my very eyes.
I don't have Linux installed so I can't test it myself, but a close Tux-friend of mine just tested it without an issue.
Could you perhaps have used the unzip command and canceled it prematurely?
98 days ago(+1)
Thanks for the update! It works fine now. I'm not sure what happened with the unzipping the first time. I didn't do anything unusual that I remember.