Noriyuki Iwadare's steampunk shmup score from 1992 got a full 3DS makeover and the upgraded audio does justice to what the Genesis FM chips were straining to express. The title march "Koutetsu Koushinkyoku" still has that militaristic stomp that sets the steampunk tone immediately.
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Stage 1 rips right into this driving melody that keeps pace with biplanes and zeppelins on screen, while Stage 7 pushes into darker, more desperate territory as you approach the endgame. The True Final Boss track goes completely unhinged in the best way.
Iwadare is better known for Lunar and Grandia, but this earlier work shows he could write pure action fuel just as well. If you love shoot-em-up soundtracks with real personality, don't sleep on this one.