This is the 3d model of a German made tank. It is the Leopard 2 Tank by Kampfpanzer Rheinmetall. It took for about 1 month and a half to model the complex structure of this military vehicle. It has vertices for about 100k to 1 million. It also have a smart uv unwrap with a basic pbr textures. I chose to settle on gltf format rather than putting an emphasis on fbx because this file is native to blender. I also included the recent files in .blend format of the other previous works. It has an stl and obj files also.
The animation is pretty basic, I chose to frame it up only to 500 frames within 60 fps but it seems it is just too fast so the available animation video I presented in the files is onlt at 50 fps and 30 fps. The textures is also included already but if you are still not contented, you can modify it in blend file and bake it according to your desired texture nodes architecture. So far, I already imported it from Godot also and it works fine. I haven't exported it yet to Unreal Engine 5 and other game engine platforms but as long as it works in Godot, it will work also to the other. It is already up to you on how to solve the problem regarding to other issues that you might encounter in this files (I mean, it is already been tested so what I really meant is that sometimes, unexpected problems might arise like your computer, the software or other unexpected factors).
So far, the only files I included is only mtl, obj, blend, and gltf. I hope that would be enough because the application of modifiers like constraints in fbx from Blender seems to be problematic so I chose to just export it to gltf. The good thing is that gltf is much better than fbx.
Have a nice day.