The page is missing all the game data, it's only the executable
Viewing post in The Glitching Graduation jam comments
Hi Gugames. Thank you for letting me know about this - this is my first published downloadable Unity game I have built so I thought you just needed to upload the executable file.
I have uploaded the zip folder of all the game data with the Unity dlls. The installation instructions are on the page and you should be able to play the game successfully. Please note that the game 's ending is still very rushed as I have not updated the game yet.