The same developer (CAProduction, the guys behind Sapphire for PC-Engine, Bulk Slash for Saturn, Mario Party for N64 and Sky Odissey for PS2) did also Kishin Douji Zenki: Battle Raiden for SNES.A friend I know owns Hagane complete in box...*drools*...
Anywho, he let me play it hard as hell but really fun! I like the dark aesthetics too!
I've come to the concession there is no chance in hell I will probably ever own a CIB or cart copy otherwise of that game
Check it out.
As for SNES games that I will probably never own:
The firemen PAL, Soul Blazer PAL SCN (only PAL release with english text) and many more RPG and also Hagane.