The DEMO version only includes 4 pages:
http://pixelgun3d.io
http://pixelgun3d.io/minecraft.html
http://pixelgun3d.io/zombie-clash-3d.html
http://pixelgun3d.io/squid-game-dalgona-candy-3d.html

It is possible to download these free files and install them on your server, so you can test how the site works.
Visit http://www4.waybackmachinedownloader.com/en/buy-wayback-machine-downloader-recover/ to buy a fully functioning site.
Go back to the index page