This riddle started life within a video game and expanded to a website, where it eventually led to various real-world locations. Now it is continuing through time. We have recovered four keys and one of these will unlock something at the base of the Eiffel Tower in the year 2113.
Antti has been very clear. This is happening. He has made very specific arrangements to ensure there will be something to open when the key holders arrive in August 2113. This story will be passed down through the generations and there will likely be four to five people gathered beneath the Eiffel Tower with keys in 2113. There will likely be a man in a hat and umbrella standing there in the rain, eerily similar to the scene from Back to the Future II where the postal worker delivers a letter to Marty in 1955, from 1885. There will be excitement, uncertainty and curiosity like very few people will have ever felt.
I just love shit like this.