The original clue to the puzzle pointed at an ancient city. The city in question was in fact City of Genesis, my old Mafia game. The "go to 87 and repeat" part referred to page 8 and page 7 of that thread, on which there are two connecting messages. Combining them produces the correct answer to the puzzle: "GIVE LIFE TO THE CHILDREN" (a quote from one of
Five Nights at Freddy's 2's mini-games).
The second clue I posted on Day 2 was the exact definition of the word "genesis", taken from the dictionary. This clue was meant to confirm that the answer could be found on the City of Genesis thread as opposed to anywhere else.