Ladies, gentlemen, for those of you still interested on this little jewel for the venerable MSX by Konami...
Lo! The Window$ remake is ready, released by
Demon VideoGames and already updated once. I've been playing it for a while and I must say it's splendid given the possibilities of its source as long as you want to see the original spirit of the game properly preserved.
Find it here:
http://demonvideogames.blogspot.com.es/2015/03/we-lanuch-remake-of-knightmare.html
Ok, it's not Garegga (bright colours, you see... couldn't find more differences myself

) nor it's the kind of shmup I'm used to, but I honestly think it's worth a try... or a thousand for that matter; the original MSX game is infamous for being quite difficult, though I must admit I didn't play it enough back in those dark days, and they say this remake is even harder. Besides,
Demon VideoGames guys are from Spain, like your
not-that-humble servant, and I found myself kinda... forced to give credit where it's due.