[soundtest]

I can still beat the first one on my Genesis... the second one is much more difficult though. I played it last year with a friend and we couldn't beat it.

One other thing that must be stated is that the music in the SOR series is fantastic. It was composed by Yuzo Koshiro who did the music for Revenge of Shinobi. Also, a lot of sound effects from Revenge of Shinobi were used in the SOR games (bonus sound effects, level clear music, etc.).