A new version of WRoom has been published today and new features have been added:
Embedded videos into the walls (Using FFMPEG)
Running and Strafing
Supporting WASD keys
Added menu to list control keys
New light effect and walking motion
You can try it by downloading the ZIP file from http://wroom.crombz.com
It should work on Linux, but you need to link your FFMPEG into the "libs" folder. Eventually, it will be fixed.
You can also get the source code on github: https://github.com/patrickballeux/wroom
Look at the file "map.wrm" for an example on how to create your own WRoom.