itch.io

The Veil Chronicles: Nix University

i have the game fully downloaded and i fully downloaded and am running itch.io and logged in but when i do the chmod command i get "-bash: syntax error near unexpected token `newline' what does that mean??

ok so I really looked every where and it said it being google that I have to use the terminal to start it which I've never used before Is that where I type in what you said?

I did but nothing is giving me an answer 

hi I downloaded a game that said it was able to be played on Linux 64 but idk how to start it now that it is in my files