I've tracked down a game named superhot and downloaded zipped Linux version. I unzipped it and there was a directory named SUPERHOT-LINUX_Data and file with extension .x86. I went to properties and ticked "can execute". But the file still doesn't start. All i can see is bunch of processes starting upon clicking on that file. Their names starts with unity.

Should i install some libraries or something?

Thanks for advice

Edit: I've tried as damien said and mono installed successfully, but still nothing. Then i tried running that file from terminal:

$ ./SUPERHOT-LINUX.x86

and it returned:

./SUPERHOT-LINUX.x86: error while loading shared libraries: libGLU.so.1: cannot open shared object file: No such file or directory

I guess something is missing?