Dying Light is a 2015 survival horror video game developed by Techland and originally published by Warner Bros. Interactive Entertainment. The game's story follows undercover agent Kyle Crane who is sent to infiltrate a quarantine zone in a fictional Middle Eastern city called Harran. It features an enemy-infested, open world city with a dynamic day–night cycle, in which zombies are slow and clumsy during daytime and extremely aggressive at night. The gameplay is focused on weapons-based combat and parkour, allowing players to choose fight or flight when presented with dangers. The game also features an asymmetrical multiplayer mode (originally set to be a pre-order bonus), and a four-player co-operative multiplayer mode.