Mount Chiliad UFO Easter Egg
Until now, you’ve only been able to see evidence of dead aliens in Grand Theft Auto 5, but what if you could see a real flying UFO? You can, but not until you complete the game 100%. Once you’ve done that, you can take any character to the top of Mount Chiliad, stand by the telescopes, and then wait until 3:00 AM sharp. You’ll need to make sure it’s raining, or that there’s a thunder storm (which you can activate with a cheat code), the flying UFO will appear and stay in place until sunrise.