glitteraty,
This may work with clothing (clueless because I only have PP2014), but when it comes to complex objects it's different (In my example, I chose the wristwatch for a reason because it incorporates rigid and deformable parts at the same time).

I don't think that it will work well with rigid objects, and I also suppose (note well!) that the decimation tool doesn't provide options for rigid objects.
So it's back to good old handicraft...

Peter

Peter, I don't think the decimation process has any ability to determine between rigid and soft.  As I understand it, it removes the polygons which intersect, so I doubt these issues have any detriment at all.  After all, lots of figures dressed in armor and such appear in game engines, do they not?

I have PP14, but not game dev.  I simply don't do games, so I have no reason to upgrade to it.