A little known game from the NES era called "Magician" exists. It is tough. I've never gotten very far in it. But I've listened to the chiptunes from it many times, and this theme is just epic. I basically run it into the ground as best I can, leaving you winded and exhausted at the end.
from Gamey Mixture,
released September 10, 2010
Source: Magician (NES), "Track 7", by Neil Baldwin.