У вашего броузера проблема в совместимости с HTML5
This is an old design of the Garbage level for S.T.A.L.K.E.R., as seen in the 1935 alpha build, as you can see, completely diferent from what we got in a final game.
I have rebuilt it to the SoC game, spawned some stalkers and mutants, gave some nice shaders and recorded this video, having an enormous 800m AI switch distance, to let you see some life ;)
You also can download this little mod from here:
http://forum.epicstalker.com/viewtopic.php?f=19&t=77