I think that's a problem with the flash. Had it some time ago on other sites, and apperantly you solve this problem by adding the site (in this case DYOG) to your list of trusted websites in your browser. Also apperantly some browser do have these, and perhaps this will solve the problem for you to, did for me back then.
As for the game; I have to admit that I was hoping for a little bid more diversity, after the beginning of the game, where you can chose to disobey the voice and walk into the opposite direction. See how the voice gets angry kind of gameplay. That in combination with the subject number the voice gave you, it would remind me of portal, so there you have it, the orange box :P. Sadly all that was waiting for me was this room with "avoid all deadly objects as long as possible-gameplay". Was hoping for a bit more, or at least something different.