Abstract: A missile responsive amusement apparatus comprising a target mounted upon one end of an elongated target arm, the latter being pivotally mounted to a box-like frame, whereupon when a missile strikes the target, the target arm pivots in a direction causing its other end to engage and rotate a latch bar for lifting latching teeth out of notches located in a pair of spindle cams, thereby releasing a spindle bar to which a seat is attached for rotation in a direction causing the seat to swivel downward for dropping a person sitting thereupon into a tank of water below the seat. Thereafter, via spring biasing of the spindle cams and target arm, the apparatus can be reset by rotating the seat upward until it latches in its upright position via the latching teeth engaging the notches of the spindle cams attached to the spindle bar, while concurrently causing the latching bar to rotate for pivoting the target arm back to its "cocked" or "ready" position.