Files 20-25 all has the same QR code.
The only file left is 16. I can't see anything in it though.
I don't see the QR code in file 20, only in 21-25. And there is no file 16 left after uninstall.
EDIT: File size and bitrate of file 16 was changed in comparison to original game. Old: 30.5 kB, 176 kBit/s, new: 188kB, 256kBit/s
File size of 20-25 is 430 kB for each, bitrate 705kBit/s
Edit: 20_swoosh.wav