Adobe has announced the following:
"Since Adobe will no longer be supporting Flash Player after December 31, 2020 and Adobe will block Flash content from running in Flash Player beginning January 12, 2021, Adobe strongly recommends all users immediately uninstall Flash Player to help protect their systems."
Therefore, due to circumstances outside of my control, I will not be able to continue offering the Cryptogram game. As Flash will become more and more vulnerable, I am forced to remove the game from my site in the future. In case anyone has projects relying on it, I will let it stay for six months, and then at the end of July 2021 it will be gone.