Frenzy is a multidirectional shooter arcade video game published by Stern Electronics in 1982. It is a sequel to 1980's popular Berzerk; both games were develped by Alan McNeil. Frenzys gameplay is fundamentally similar to Berzerk—the player enters a series of maze-like rooms containing armed robots and must shoot them to survive—but adds more variety. Ports were released for ColecoVision and ZX Spectrum. Gameplay The player must navigate a maze full of hostile robots. The goal of the game is to survive as long as possible and score points by killing robots and travelling from room to room. The game has no end other than the player losing all of his or her lives. The player has a gun with which to shoot the robots, and simple intelligence of the robots means that they can often be tricked into shooting one another. If the player lingers too long in a room, a bouncing smiley face (known as "Evil Otto") appears, and relentlessly chases the player. Evil Otto will destroy any robots in his way, and can move through walls. Differences from Berzerk In Berzerk, the walls are all electrified and kill the player on contact. In Frenzy, some of the walls of the maze are composed of "dots" which can be shot. This opens up strategies such as blasting a hole in the side of a room through which to escape when in trouble. The solid walls, on the other hand, now reflect shots. The player can trick robots into killing themselves by standing on the opposite side of a reflective wall and letting them shoot themselves. The only wall that simply absorbs shots harmlessly as in the original is the closed door that appears behind the player when he enters a new room. Neither type of wall is electrified in Frenzy, allowing the player to touch them without dying. The robots in Frenzy no longer kill the player on contact but now create small explosions when shot, which can kill the player. It is no longer possible to kill robots by tricking them into walking into the now-harmless walls. There are two types of robots: skeletons and tanks. The two types have identical behavior, but the skeletons are more difficult to shoot from above or below due to the thinness of their sprite. In Berzerk, Evil Otto was indestructible. In Frenzy, shooting him once changes him from a smiley