[James]

I found there's a Fish8 entry in the registry, but there are only 7 fish in the tank no matter how I try to tweak it, what's the purpose of this Fish8 entry anyway?

The N key still work, however, the difference doesn't seem to obvious, the only difference I can see is when the moment of pressing the N key, 0.5 second later, the fish looks same, although the registry CalcNormals remains 01

The wide screen feature is cool!!! but I'm not very sure about the purpose of anamorphic factor, it only changes the width of the tank, what else does it do?

And the sunny is right, MA2 MD shares the same regitry of MA2, I think that causes the problem