Night of the Living Dead in 30 seconds with bunnies. Watermark.php (JPEG Image, 680x338 pixels) Zombie_v3_7b : Built with Processing. Zombie Infection Simulation v2.3. Zombies are grey, move very slowly and change direction randomly and frequently unless they can see something moving in front of them, in which case they start walking towards it.
After a while they get bored and wander randomly again. If a zombie finds a survivor standing directly in front of it, it bites and infects them; the survivor immediately joins the ranks of the undead. Survivors are pink and run five times as fast as zombies, occasionally changing direction at random.