I highly doubt there's any other Anamanaguchi/chiptune music fans but just in case... they just "leaked" their own game after a string of angry tweets towards the developer, but it turns out it was pretty much a publicity stunt and their website has a TON of new music and it's great:

http://anamanaguchi.com/CAPSULEDEV/

All the mp3s are in there.

MSWGO is a bop lemme listen

Ooo Lemme go listen! I love them!

Loved their album! Lemme listen

I finally went through all the songs and there's so many quality songs amongst all these. 2016 is THE year

What a creative way to release new music though