Start a new project then, and make sure you’ve selected “3D” under Template. (Unity used to be referred to as Unity 3D, but these days it is just as popular for 2D development.) ...

A simple solution would be for us to use a cylinder and then change the dimensions. So go to GameObject > 3D Object > Cylinder and then drop it into your Scene.

If you want to create everything on your own with Unity or Unreal, you’ll need access to image editing tools, 3D modeling software, and audio software, among other things.

This course will teach you to how to make awesome Minecraft-esque 3D assets so you won’t have that problem. Blender for Non-Artists: Create Low-Poly 3D Game Assets ...