An effects generation system structured to produce a controlled special effects cloud and comprising a cryogenic fluid source including a container wherein a quantity of a cryogenic fluid is stored. The container includes a fluid outlet and a fluid inlet, the fluid inlet being disposed in fluid flow communication with a pressurization assembly that is structured to maintain an outflow of the cryogenic fluid, under pressure, through the fluid outlet and into a delivery assembly operatively connected with the fluid outlet and structured to deliver the cryogenic fluid into a predetermined area through a plurality of delivery ports and into reactive proximity with a quantity of a reactive fluid so as to bring about a phase change in the reactive fluid sufficient to result in the formation of the special effects cloud.