While there are plenty of alien Easter eggs in GTA 5, a lot of them require 100 percent completion. This one, though, you can see at the very beginning of the game. You must pass a train once you ...

GTA 5 has been rife with myths and urban legends, such as the Mount Chiliad jetpack, a dog-like monster called The Jackal, a ghost train, Bigfoot, and UFOs. These were uncovered as hoaxes ...