Games need to be made within the jam period. Your video was made 3 months ago..
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Peace Unto You!
The story was made before the code. Similarly to how musicians make the instrumental before the lyrics. As I too am a musician I know this process well.
The Chapter One story is very broad so the video having a timeframe doesn't instantly mean the game itself wasn't made in the proper timeframe.
Thank you! We are very grateful!