On witch system is your fastest running version of this game?
Viewing post in Sub Mare Imperium - Derelict 8-bit comments
Between MSX and Master System, I don't expect much of a difference. It's the same Z80 with TMS9918 VDP.
Later today, I will upload a version for the IBM PC with 8088 and CGA. That version might perform a little better. Particularly if you run on 10Mhz machines or maybe a 286. On a 486, it might be a bit too fast (but then again, you're better off running the 32-bit version).