Prompted to type "Start" by an arcade-style alert, users found themselves delivering instructions to a GoPro-equipped actor fending off undead attackers in a scene blending the best elements of Goldeneye with Resident Evil.
In keeping with the video game concept, the hero starts off with pretty lame weaponry (a crowbar??), upgrading to more badass firepower as keen-eyed Chatroulette allies spied guns scattered throughout the environment (including, of course, in random pots, you Legend of Zelda fans). As always, the villains stepped up their game as well, culminating in a foe whose sheer crap-your-pants factor resulted in the virtual deaths of some players.
The team behind the project also released a behind the scenes video showing how they pulled it off.