How many of you out there in intarweb-land seriously thought that, when setting zombies alight in Ravenholm, the Source engine might one day be used to power a simulation of fire safety & how to safely evacuate a realist model of the Computer Sciences Department in the University of Durham that has recently been engulfed in flames?
Seriously? Me too!
Anyway, some enterprising chaps have done it. Cue one virtual representation. Who says games are bad for your health?