in need of a single mesh

Hello all
I’m developing my first game in unity and there is a problem I’m facing with. In my game, there is a ball rolling along a platform made of cubes, boxes, bridges,etc. to duplicate let’s say a hundred cubes would be a time consuming, pointless action to do. not to mention that all these meshes together will significantly lower the speed and the efficiency of the game. so I want all my meshes to be regarded as one single(or a few more) game object. Besides, I don’t know how to work with 3ds MAX to do the job for me-i.e consolidating the meshes to be only one.
I’d appreciate it if you help me with your ideas.
thanks

Use Blender, it’s free. If you’re going to be working on 3D games, you should at least learn the basics of 3D modeling. There are many Blender tutorials you can find.

–Eric