This client-side mod alters the default rendering of Minecraft entities. Instead of creating boring old cubes, it instead, creates a hexagonal shape.
This mod affects every entity model renderer in vanilla minecraft, with the exception of cubes that are entirely flat (such as the pages in the enchanting table book) which are left as is.
This mod is in principle, compatible with any other mod. The only potential issue is that some custom chests may use the old 'square' rendering in inventory but 'hex' rendering in world.