Nostalgia time! The Adventure Game was an early reality-type show in the UK. Instead of physical challenges, there were puzzles, often quite difficult, set by “aliens from Arg”. Earnest, for kids, but still much more interesting than today’s rough equivalent or anything involving slime. At the end of the show, you had to walk across a grid, trying to avoid a vortex you couldn’t see. Hit the vortex? Walk home to Earth. Love it, need it back.