Skill & Precision Games · 57

A forgiving input window can make a game feel crisp rather than easy, because the player's intention survives tiny differences in hardware and reaction time. A related fact is worth keeping: A frame at 60 frames per second lasts about 16.7 milliseconds, which is why a 'one-frame window' is both tiny and extremely memorable. A checkpoint placed after the hard part is kindness; one placed before it is a recurring appointment.