Going down the rabbit hole is one of the best parts of gaming. And the internet's pretty good at solving mysteries — mostly.
For all the crazy ARGs in the world — Trials anyone? — there's a ton of games that have easter eggs and references that continue to stump people today. YouTuber oddheader has put together a video looking into 10 unsolved quirks of video games new and old, ranging from the bizarre code outside the level boundaries of SpongeBob: Truth of Square, Japanese voices talking about something cute in Persona 3 on a day that's not supposed to exist, a bizarre moaning sound in Borderlands, and more.
Some of these mysteries can surely be resolved in this day and age. The Far Cry 5 radio noise surely has an answer — and people aren't certain on what triggers the sound, which doesn't play in every playthrough — and there has to be someone, somewhere, who knows the answer to In Cold Blood's hexadecimal weirdness.
If you're interested in more obscure mysteries in video games, oddheader also has two other excellent videos, which you can view below.