As I was watching Der Eisendrache gameplay awhile back I realized there was I trap called the "death ray". Now as simple as the name sounds it actually has an inspiration: The Death Ray was an invention conceptualized by Nikolai Tesla in the 1940s. The invention was covered in some newspaper articles and was going to be produced once complete. Now you may be asking "but why don't we have Death Rays today?" well that's a good question and would've happened if it weren't for Tesla's death before the weapon was given to the military for testing. The device even works the same in zombies as it would in real life... Minus the electric floor. Anyways... If I find any more trivia I'll make sure to keep interested readers updated with the latest via new posts.