Btw been 100% (not true , no cheats , all characters alive , all epsilon missions) for 3 weeks now lurking this forum trying all the epic thoughts you peeps came up with , i am happy test anything that sounds plausible
Ok, got an easy one for ya.
Alot of people think the red Xs represent player choices throughout the game.
So, start a new game, and as soon as free-roam is possible, check out the mural, if all the Xs are still there, then it's debunked.
Can't have certain choices made if you haven't 'made' any choices yet.
I'd be really dumbfounded if I am the first to suggest this obvious-as-f*ck course of action.
As for the rest of you, with all your shadow theories and burnt grass, you're looking too hard, and in all the wrong places.
The first thing any of you should be doing is doing your homework on traditional alien mythology, their appearences in pop-culture, related information about them.
R* no doubt is made up of those who were around since the 80s and earlier, they draw from 'those' experiences of fiction, not modern alien theories.
Look at those FIB UFOs for Christ sakes, they're retro as f*ck.
Think past, not present.