Hello Micket, First of all let me apologize in case I have offended you by saying what model has much higher poly count than it is in reality. You are right when I have imported model from FBX file, columns had a much higher polygon count. Looks like when model was exported the subdivision modifier was left active and exported together with columns. I have looked again over my import settings and didn't found any option to prevent this to happen. Perhaps this was caused by how blender export models to fbx or by 3ds Max during the fbx import . Below are my import settings. If you have some advice and found my mistake please let me know, this will be highly appreciated. Maybe fbx captured smoothing data and when 3ds Max imported object it subdivided columns geometry Any way it is not so important because subdivision glitches are easy to fix in such cases. In images above I just showed what I get when imported model to 3ds Max and what I was able to achieve after, just this and nothing else.In general model looks great and I have learned a lot from it, especially nice trick with removing polygons what will be not visible to player to decrease poly countAnd again my apology . Micket you mentioned about baking. I am wandering what kind of maps can be baked in addition to diffuse. I spent recent days reading on 0 A.D. wiki and as I have understood to model are applied just defuse texture, no normal map no AO are supported. Also stanislas69 pointed me what textures for structural models are predefined in form of texture atlas (I hope this is the right name for this kind of texturing technique). I am very interested in this topic please let me know where I can get more information. --- As I said above recent days I have spent a lot of time reading on 0 A.D. Wiki and learned how to import models to Atlas engine . Bellow is the result of my journey I am not sure if the model size is right in comparison with other buildings. Also I have worked on texture and re UV-ed it 3 times and still I'm not impressed with the results. I get very low resolution on the basement and only way i see to increase texture density I see is to subdivide basement mesh. Now poly count is 3,087 triangles (2, 041 polygons).