After a year of research, Pokémon Go fans have uncovered a hidden mechanic involved in catching creatures from raid battles.
The research, published today by fan resource The Silph Road, appears to show a secret modifier that boosts the likelihood of catching a raid boss over the course of an encounter.
Simply put, the longer it takes you to catch a boss, the more likely it becomes that your next Premier Ball throw will actually do so. Or, as The Silph Road reports: "You are more likely to catch the raid boss on the 10th throw of the encounter than on your first."