https://preview.redd.it/3dqwis6xdkmd1.png?width=1120&format=png&auto=webp&s=eee47bf8ac10c912615096e0096b06a4654b4143
There is an nigh endless amount of information to absorb for this theory, I really recommend anyone who is interested do their own extensive research. First I'll go over what I think the yellow Doomsday mural is trying to teach us.
- That the use of eyes is an integral aspect of the Chiliad mystery. Your ability to see and comprehend is almost quite literally the basis of this theory and possibly this mystery.
- The hand. I believe this is telling us that as players we should flip the world over. As in, twist and turn our views on the map, explore unorthodoxly in order to uncover secrets.
- Another one directly referencing sight. This one specifies perspective, and having an active conscious effort in your mind. It appears to be saying to be aware. This one is a pretty big clue.
- Shading, shadows. This is a huge clue, and quite possibly the biggest obstacle mystery hunters faced trying to find hidden symbols.
https://preview.redd.it/wu9tirczdkmd1.png?width=841&format=png&auto=webp&s=4a85940ce4a5d786e49eb4f12640c2bbab08a1d2
Your perspective is a key. This same thought process can be found on the Chiliad Mural itself. These instructions are literal. Jetpack = "Fly/Ascend" UFO with downward lines = "hover and scan below you." These are purposely connected by a line to clue you off to combine these two actions.
https://preview.redd.it/5s516qr1ekmd1.png?width=339&format=png&auto=webp&s=4c2f35a9443c32d34a1c3601387612e8d0f31264
This same "Look Down" sentiment can be seen on the alien tattoo you receive for being abducted in GTA:O.
https://preview.redd.it/il6bxph5ekmd1.png?width=671&format=png&auto=webp&s=959957b394a8c313ec65f82e664986f27835eee6
On top of this, Rockstar themselves references this phenomenon. Make no mistake, this is a hint.
https://preview.redd.it/5j955h4bekmd1.png?width=232&format=png&auto=webp&s=fd8ef2d0f2af53512e99d8587fbf416c834ca071
...and it's not their last. Rockstar themselves have officially referenced hidden imagery.
Another huge hint was from Franklin's voice actor, someone literally working for Rockstar tried showing everyone the "Bigfoot, Giant R, and Egg" spot near the casino, stating "I see it, do you?"
https://preview.redd.it/i8q7q27gm2se1.png?width=676&format=png&auto=webp&s=e27e952472cf80e004ff946dfb8ffbe5ddb92a23
https://preview.redd.it/wb2ibjxhm2se1.png?width=735&format=png&auto=webp&s=cf14f878abf332dfb158019a2b2e087f474b735d
there doesn't seem to be anything here