Abstract: A dunking apparatus, useful as an amusement device, is provided which is easily assembled, disassembled and transported. The apparatus comprises a control housing for enclosing at least part of a release mechanism, a load supporting platform and a fluid-retaining reservoir mounted upon a support platform. The apparatus also includes target-supporting walls hingedly connected to the housing which may be pivoted to lie flush against the remainder of the apparatus for disassembly, or pivoted to extend perpendicular to the remainder of the apparatus for operative assembly. The entire apparatus may be permanently mounted upon a wheel-based, mobile trailer.The apparatus also includes an impact-activated release mechanism for releasing a load, such as a human, sitting upon the platform. The release mechanism is activated upon impact with a thrown object, such as a ball.