#1 UFO Invasion
On July 8, 1947, something crashed on a ranch near the U.S. Air Force base at Roswell, New Mexico. Speculation has it that this object was in fact an alien spacecraft, and that the crash site was quickly covered up by the government. Could aliens be secretly communicating with world leaders? Are extra-terrestrial agents infiltrating our societies? Could the U.S. military be building a clandestine weather weapon with the aliens’ help?
The UFO Invasion mod by LelaoNN doesn’t answer any of these questions. Instead, you can spawn in flying saucers, which proceed to break stuff like interstellar Limp Bizkits. It’s fun.