You are in charge of covering your colleagues workplace while he is taking a bathroom break. You’re just sitting in front of a mysterious panel which only component is a red button. And since you’ve clearly been instructed not to touch anything, the only thing you want to do now is pushing that damn button. Just be careful, because one wrong move can blow whole city monitored on the screen. But if you know how to follow all the clues in control room and do some math, then you will make it.