You can also download the source code for free from the Goo Engine GitHub and compile it yourself. Warning Regarding "vfxmed.com" Goo Engine - A Blender For Anime
It adds specialized features to Blender’s Eevee engine, such as custom shader nodes and light groups, to achieve a 2D "hand-drawn" anime look more easily than the standard version.
The official way to get pre-built binaries (like the .zip file you mentioned) is through the DillonGoo Studios Patreon .