Bring water, sugar, and jello mix to a boil in a large saucepan.
Boil for 3 minutes, then stir in pineapple, lemon, and orange juices.
Divide mixture into 2 separate containers and freeze at least 8 hours.
Just before you’re ready to serve, combine the contents of 1 container with 1 bottle of the Sprite or similar carbonated beverage in a punch bowl and stir until slushy.