Developer rebuilds Doom using only CSS and HTML, turning divs into a full 3D game engine

Leenheer is best known for creating HTML5test.com, the WhichBrowser user-agent parser. He began exploring a CSS-based Doom ...
GitHub

Most light weight local portable web server with Apache, PHP, MySQL and PHPMyAdmin for Windows on the Web. Just unzip enywhere (including USB flash drive), run and start using.

remembering that this is not my project. It is part of the original site that is in the description, I just updated it.