You can download binaries for this game for the most common desktop platforms. All executable are 64-Bit.
NOTE: On macOS and Windows the Operating System will warn you, this is because the binaries are not signed. (Because that const money, which as a student I cannot afford.)
Try to close the window with the mouse.
Tipp: You can press ESC to change the windows "mood" and it will come to to you, so you can close it easier.
The game was created with Godot which you can get from godotengine.org
Once you donwloaded all the code from this repository, you can open the folder with Godot and start hacking around.