Alien Vendetta (also known as AV) is a highly regarded Doom megawad featuring 32 intricate and difficult levels. Each map is rich in detail and packed with enemies. It is one of the few PWADs officially permitted for use in Compet-N speedrunning events. Alien Vendetta has seen two distinct versions. The second version, released after its selection for Compet-N, includes numerous modifications to nearly every level. The most notable change is the replacement of MAP25: Valley of Echoes with MAP24: Clandestine Complex, along with the repositioning of the original MAP24: Demonic Hordes to MAP25.