An extended/enhanced version of the battle theme from Deck of Desire, an extremely NSFW card trading game.
In the original game there was a much shorter version of this song, in both chiptune and symphonic versions, as well as a bunch of other music. The game itself has been essentially abandoned as a “prototype” (despite having been very popular, and still tops my download analytics on itch.io years later!), but I had some ideas about how to expand the soundtrack into a full musical experience.
Maybe someday.