You will need to install a user script manager extension to install this script.
there is a slight error with cities, as they are just a dot, sometimes they remain black after clicking. i have attempted to minimise the effects of this by removing the dot, however it only seems to work half of the time.
to use, simply install it with tampermonkey blah blah like with the other scripts, then go to seterra and play. in the script it matches to geoguessr because you may notice that the seterra quizzes link to geoguessr.