Kids checking out the Free 3D Game Maker Platinum Arts Sandbox :) The maps covered are Save The Princess 1 and Save The Princess 2. As a note the Princesses do talk now if you download the patch :)
Platinum Arts Sandbox is an open source easy to use standalone Free 3D Game Maker and 3D Game Design program currently being used in many schools throughout the world that allows kids and adults to create their own video games, worlds, levels, save the princess adventures and quests, even cooperatively! The goal is to make it accessible to kids but also powerful enough for full game projects. With a simple click and roll of a mouse wheel users can modify the world however they want. In the words of Margaret, a nine year old Sandbox whiz I babysit for, Press Edit and go fulfill your dreams!. Now features new game modes such as Save The Princess, sidescroller, machinima, kartmode, RPG, and more!