hi 
we are making a pc game using Unity and importing files to it through 3dsMAX
my question is
how many polygons is it normal to have in a single scene that most computer (not just the new ones but a bit older ones as well) will operate smoothly ?
and another question is if I open a new scene is the polygon count for the game zeroing or does it continue from the last scene (IE can I open another heavy scene without the game lowering performance)
Thanks ahead
shay
Really, this question is too ambiguous to have a straight answer. The real question is how it runs on the intended system. If it works fine with a high poly count, then keep it. If it is choppy, then you should definitely think about lowering the poly count a bit. You can simulate different internet speeds in Unity, as well - go to Edit → Network Emulation, and you will find a list of different network types that Unity will emulate.
And your second question… The only polygons that count are the ones that are currently being used (a.k.a the ones in the current scene). Objects deleted during play will detract from the poly count, and objects instantiated during play will add to the poly count.
Tthere’s a lot of people that have asked this. For example:
http://answers.unity3d.com/questions/19379/how-many-polygons-is-too-much.html