Download the release (or read the Wiki), not the source code (unless you're a developer).

Jay39w faafdd18a4 bugfixes? 3 weeks ago
source-code faafdd18a4 bugfixes? 3 weeks ago
.gitattributes 321ecdf8b7 First commit 5 months ago
.gitignore 321ecdf8b7 First commit 5 months ago
.gitmodules f53ddd1c7e Clean up (part 4) 4 months ago
README.txt 8d02025254 XInput Rumble 3 months ago
appveyor.yml efee523b0e anna oop sksksksk 3 weeks ago
dnsapi.dll 85d5ea002d Oof 4 months ago

README.txt

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.