Over a decade after GTA 5 launched, the Mount Chiliad mystery still won't die. The cryptic mural atop the mountain sent players chasing UFOs, jetpacks and hidden meanings for years — and, as Polygon notes, some fans believe the puzzle was never actually solved.

That unresolved itch became a phenomenon of its own: forums, wikis and years of datamining devoted to a drawing on a wall. Whether Rockstar ever intended a grand solution or simply enjoyed watching the community spiral, the mystery gave GTA 5's open world a layer of myth that few games have matched.

Polygon's argument is that GTA 6 should do it again — plant something deliberately ambiguous, something that can't be brute-forced by dataminers in a week, and let the community obsess.

With GTA 6 anticipation already at a fever pitch, a new Chiliad-style enigma might be the cheapest long-tail engagement Rockstar could ship.