Dying Light contains a dynamic day and night cycle. During the day, the player has to go out and scavenge for supplies to send back to the safe zones. They can set up traps, save random survivors, and make their way to airdrops. The infected are slow, apathetic, and easily visible, allowing the player to simply make their way past them, but their danger grows in numbers. Players can also use environmental traps, such as spikes and electrified fences to kill the infected. Lead game designer Maciej Binkowski stated that day time will last for approximately 64 minutes, while night time will last for approximately 7 minutes. The game also features a physics-based lighting system and a dynamic weather system, which includes a variety of conditions such as fog, rain, and wind.