Unfortunately, the puzzle did end up unclear because I didn't have enough time to have others play test it. It is by using arrow keys and P buttons, like you said. There are no other controls. But How you are supposed to decipher it is hard for me to explain. As for the story of the last gam, the first line of this one gives you a summary. Here is the link to the first game. It can take less than 5 minutes to play if you are interested. There is also a youtube video of a playthrough someone uploaded on that page if you prefer :) Regardless, I really appreciate you trying out my game, and taking time to give detailed feedback. Thank you so much!