I've worked in the field of virtual reality for 25 years. I began by making VR games in Studio 3D, then I joined VREAM (X3D/VRML plug-in and authoring environment) heading up the content department. Great job and cool people!
I've continued doing many X3D/VRML projects since then. The running man above is running on all platforms without a 3D plug-in. I have many examples that I can show you if you install either OctagaVS or BS Contact X3D browsers. They're free.
Here are some screen grabs of some more complex VR worlds I've created using the browser plug-ins.
I'll be posting more in this section, soon.