Hi Kate! THe new RMH DVDs are going to be very different from the first ones. The content will be different, and the quality will be much better. The four from the first rmh dvds were: "Fire Science", "Sneaky Heat", "Boom Squish" and "Hot Rocket". Which is obviously very different from the new dvds: "Cob Style RMH", "Pebble Style RMH", "Shippable Core", and "RMH Innovator's Event"