I recently started playing the standard Osu beatmaps - I'm not sure of the technical term of the format but I'm referring to the traditional beatmaps which involve clicks, sliders, reverse sliders and spinners.
My question: What exactly triggers 'game-over' when playing a beatmap?
What I know: if I mess up a lot in a particular run through of a beatmap, it's game over (i.e., the beatmap stops)
What I don't know: What is the exact termination condition for a beatmap (assuming no mods)? In other words, what exactly has to happen to trigger 'game-over' when playing a beat-map?
From observation, it seems that termination is linked to some threshold number of mistakes that can occur within some time-frame.
It also seems as though it's not related to total accuracy since the start of the song. For example, I've had run-throughs where it was game-over after I made a bunch of mistakes one-after-another, but, even after taking these most recent mistakes into account, my cumulative accuracy on that run-through (up until the point of termination) was 85%. Meanwhile, I've completed beatmaps where I've maintained a 70-75% accuracy throughout.