Here is another installment of exTRAPaganza, our Thursday over-the-top trap series.
The spiral staircase leads up the tall tower. When the PC’s climb the stairs, about halfway, the tower rotates, and starts to spin faster and faster, forcing everyone to be pinned against the outer walls. It can be stopped by jamming or otherwise disabling the center post on which it is rotating. However, when this is done, the tower abruptly stops, causing it to fly apart, sending bit of tower and PC’s in all directions.