so neither of those seem to have worked. do i perhaps need to download some kind of unity engine software?
As a last resort I will make another build with no image effects. It's weird though as those builds use same features as WebGL, yet the latter works for you.
Sorry forgot to ask, did you try going past Breed selection menu? I've forgotten to change effects in main menu, which could have still indicated unplayable build.
We've uploaded another build - Sipho 0.91_NoNoFX Linux Universal.zip which should have NO effects at all. Let us know if it works!