I forget which one I was trying to run a while back, but I'd have it on the 486 dx2-66 machine many moons ago, back in the DOS 6 & Win31 days, and it was fast then. When i ran it on an Athlon Thunderbird a few years ago, you'd shoot your torpedo and before you could get the 2nd one sighted in even, you'd be having the impact from the first... like a missile instead of a torp...