Is there any way to reduce material size

Size of materials in my game is 54 mb I want this to come down . Is it possible ?

Yes size of material texture is more than that of material

Run this on your project folder:

http://www.uderzo.it/main_products/space_sniffer/

You can see what’s taking up all the space.

It probably is material textures. I think you have to actually edit them and reduce them manually because even if they are mipped down in game, the system still has the original on disk.

If you have reduced the ‘in game’ sizes a lot in the texture params, you might as well make reduced versions of the textures, as this will decrease the packing size.