Combine lots of Sprites in Single Menderer

Hi i would be looking for a tool that can combine unity spirtes into single meshes.

Basically it should combine sprites with the same atlas and layout (simple, sliced, etc) into one mesh.
Is there a tool that can do that?

 

What sort of mesh? What do you need it for?
Why not just make a quad and use the sprite atlas as it's texture?

 

i want to reduce the number of gameobjects. i basicaly abused them for drawing

 

Are you talking about background stuff that doesn't move? Is your background made-up of thousands of tiny objects? You can render your entire background to a set of big render textures (I wouldn't go over 4096x4096 pixels per texture. )
https://docs.unity3d.com/Manual/class-RenderTexture.html

Then you can put your render textures on really big quads and deactivate your original background objects.

I wouldn't bother doing this unless you've profiled you're build and have found a real performance issue, though.