Secret services have located and neutralized a known terrorist who has been hiding out in a deprived area of the city for the last ten years. This is where the good news ends. It turns out that on the roof of an abandoned high-rise the maniac has installed a nuclear warhead with a timer on it. The building itself has been turned into a tower filled with intricate traps and obstacles. You have been recommended as a specialist in such puzzles, and the secret service has helped you infiltrate the courtyard. The rest is down to you. Can you get past all the traps and preempt a nuclear attack?