Remade it HD, 60 FPS and swapped the soundtrack with the CD Redbook audio.
Thank you Game Arts for making a game I still play through a few times a year. I just am starting to have trouble playing at 256x80 15 fps (7.5 on 2 levels) on so big of a screen now a days.
I own Silpheed in English as well as the Japanese version (with curse words!). I also own the PS2 and Xbox 360 games.