The map Nightfall is setup for ctf and infection. This map has a main building where human/defenders will spawn with weapons and equipment, while zombies/ attackers will spawn down the alley or near the secondary base. The map has uses barriers and bridges to make closed off sections as well as some interesting door ways, but the part that makes this map unique is, the special effects. There are four separate effects that will spawn at different times to make it seem like day is changing into night. Download at: http://www.bungie.net/Forums/posts.aspx?postID=19891681 The inside of the base. An opening, I wounder where it could go? Another entrance/exit to the main base. Watch your step as the day passes by. The ruins of base number two. An underground passage, will you take that at night.