Is in the description:
Is a supply kit with materials, textures, 3d models, 2d models & example content/levels to test things with the engine/game, desing levels, learn to use the engines and more.
…but
This is for:
Compare the scenes & light between Unreal Engine 4 & Urho3D.
Use the textures or the materials to define the objects/models/entities if you don’t have other materials. (And replace after).
Have a basic list of 3D geometry primitives to develop (Test ideas, use in pawns, use in the map, use as characters or test things of the engine).
Basic grid materials to create maps UV to preview all (The map structure).
Color palettes to check the colors of the scenes.
Shapes of numbers & letters to create text in materials.
Geometry shapes included glow shapes to create FX or effects in materials.
Shapes of numbers, letters, geometry, geometry glow in materials to check faces of models… or locations.
Location materials to check the HUD at the creation time or to place in the maps.
Triggers, Volumes, Collisions to use in the editor to difference the different types of collisions, volumes… (You need wait to the version 4.8 of UE4 because now you cannot place materials in the shapes, but you can make a custom version with blueprints).
To programmers to check animations in the map, cameras, code…
Cool thanks. Stuff like this pops up on the forums now and again and I always like what thing do manly because I have no idea what I am doing and it looks helpful, but I have no idea what am looking at.
Sorry but i don’t have time for this at this moment because i don’t have work and i’m making my game ( i need eat each day )
and for example from this i don’t get a single donation…
as soon I get to work I can do something 
)