Berzerk combined maze navigation with frantic shooting against robots, featuring synthesised speech that taunted players with 'Intruder alert!' and 'The humanoid must not escape!'
Enter the maze. The robots hunt you. Berzerk dropped players into procedurally generated robot factories, fighting for survival against mechanical enemies and the deadly walls themselves. The game spoke—“Intruder alert! Intruder alert!”—making it one of the first arcade games with synthesised speech.