Yeah! Nice idea Bilqis!
Let's see; how about
:
Piers Anthony's 'Mode' series - Virtual Mode, Fractal Mode, Chaos Mode
& his 'Bio of a Space Tyrant' series?
Also:
Michael Scott Rohan's Winter of the World series?
I read these ages ago, but I still have 'em (I collect books like crazy, I have over a thousand, if I count paperbacks...) and remember how good they were!
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Smile! Life is too short for bitching!
Fljotsdale