Hello and thanks for trying it svenar ^^ As i already wrote in other comments, i focused mostly to create a cool ambient using high quality models even if i tried compressing them after.
About the Linux version, this is nice to know. Maybe i can upload the Linux32 version that should work even on x86. Thanks for saying this.
About the windows version, probably the dark ambient is caused by your pc that does not support the Quality Settings. Have you tried to lower them to Low? Inside the game press Esc and the go to Settings if you want to try it out.
Anyway thanks again for playing with and for all the info you gave :)