Zombies.rkt is a game where the object is to use the mouse to navigate the red player around and away from the green zombies, which are constantly approaching. Zombies-BothShortDist.rkt is a version where the player and zombies will all take the shortest path towards the player. Zombies-ZombShortDist.rkt is a version where just the zombies will take the shortest path towards the player. The required PLT file has been included for convenience.