On the University School’s summer camp Explorer Program page click register or view our full description under Science, Engineering & Design. Floss on over to Challenge Island’s® Fort Island Camp™! You will ride your balloon bus into an unforgettable computer-and-violence-free adventure inspired by the world’s most popular game. You’ll build walls and STEAMtastic shelters, land in Slanted City and Treasure Lake, and design your own skins and practice your favorite dance moves. This Challenge Island camp promises to be an unforgettable experience for every fort-loving boy and girl!