It came to light in 2025 that Bungie had stolen work from artist Antireal and used it in Marathon—and I don't mean in the "borrowed ideas from" way, I mean in the straight-up "copied and pasted" way. The situation was made doubly awkward because this had happened previously, in Bungie's other game Destiny 2—and more than once.
Bungie copped to the theft, which it said had actually been committed by an artist who was no longer employed at the studio, and promised a "thorough review" of Marathon's assets to ensure that nothing else was being used without permission.
