for game you can't use the high poly models you make in zbrush, so you need to make it low poly,hence retopology which you can go right in zbrush, but to keep all the detail scultping you did in zbrush you can use normal maps and ambient occlusions maps along with your texture maps so you need to bake out normals from your…
I posted a thread on GameDev.net about using ZBrush to create models for games but was referred to here to talk about it. Also they said something about doing 'retopology' and then baking 'normals' from the higher-poly version. I am sort of lost at this point and was wondering if you can do a step by step list or perhaps…