Chop 24 ounces semisweet chocolate; microwave three-quarters of the chocolate in 30-second intervals, stirring until melted. Add the remaining chocolate; stir until smooth.

Fill 2 molds with the chocolate using a piping bag; scrape off the excess. Freeze 15 minutes, then pop out the pieces. Glue the halves together with melted chocolate.

Repeat with 24 ounces white chocolate, microwaving at 20-second intervals. Repeat as necessary until the set is complete. Wrap in plastic and freeze until ready to play.