An interactive play structure is provided for facilitating team-oriented and/or group play to achieve a desired effect. The play structure includes play elements disposed at various locations and elevations throughout the play structure. Each play element can be activated or operated by one or more play participants to complete steps in a chain of triggering events. The overall completion of the chain of events results in a desired result or effect, such as a domino-like cascade of various mechanisms, balls, water the like. In one example, the effect includes the release of a cannonball from the top of a vertical structure. As the cannonball reaches the end of its descent, it causes water to be radially dispersed from a pool, such as onto nearby play participants. The cannonball is then advantageously returned to the top of the vertical structure through the use of one or more return conduits.