Haptics Explorer is for iOS developers who need to feel a haptic on a real iPhone before they ship it, because the Simulator does not vibrate. Pattern groups include impact from light through rigid, notification success, error and warning, selection ticks, rhythms such as a heartbeat, double tap and tick-tock, gesture patterns for swipe, pinch and long press, and game hits such as an explosion or a power-up. You can play a pattern, loop it, change the speed, and adjust intensity and sharpness, then copy a code snippet you can paste into an app. It is a try-on bench for UIKit haptics, not a game.
Built because iOS developers cannot feel haptics in the Simulator, so they need a real iPhone to test how a haptic actually feels before shipping it.