This is the source code! It can NOT be used to play PDAFT!
If you just wanted to play the game, you downloaded the wrong thing.
Do not click the download button next to the git URL, that's for the source code.
For information on getting and installing the latest release,
please read the wiki at https://notabug.org/nastys/PD-Loader/wiki
If you've already read it, pay more attention and you'll find the right link.
You should also read the wiki if you have any issues, before asking questions.