3D_HTML is a 3D-multi-user dungeon for the web. You can walk around in a labyrinth and chat with other users currently online.
With 3D_HTML the focus was on providing 3-dimensionality and Multiuser functionality for the web with low-tech and minimal file size ( ~600kb complete with pictures and sound ).

technical specification

To use the labyrinth you just need a normal browser and an internet connection. No plug-ins are needed because just HTML&CSS and PHP have been used to create the labyrinth and the chat. Only for refreshing the page, Javascript was used.
The labyrinth is generated out of a textfile by the PHP program. "x" means a wall and the "s" is the starting position for each player. You can create an endless variation of levels by using different textfiles.

The labyrinth is created by many different wall pictures. These are enabled or disabled by the PHP program that parses the textfile.