OK yeah there are a lot of problems you have going here. First of all, you are trying to access it out of a zip file. Web browsers can't read Zip files without a third party interpreter to unzip the files. And second of all, that build was meant to be used on servers to be hosted by other unblocked game websites, not for offline usage. If you want to play Delta traveler offline, you should just go get an official download from the original Deltatraveler page. And for all my Chromebook users, I have not yet gotten an offline download developed quite yet, but I am working on it.