The FEZ soundtrack is best experienced with the actual game of course, but it's almost as arresting by itself. Nostalgic by nature, this is one of the best modern game soundtracks out there.
Catchier than I could ever hope to be, with better production than I could ever manage (even though it's not real chiptune). Also, the dude actually writes for video games. Check it.
Created using the processors of two Game Boys, Parallel Processing is one of the best albums in chiptune and is just as engaging as any album created with the power of modern computers.