Don’t use the words “Mine”, "Craft, or “Minecraft” in the name.
Use the term “Regular Hexahedron” instead of cube.
Don’t use Minecraft textures. For that matter, don’t use textures that look like Minecraft textures. (Don’t know why people call it pixel art. Pixel art is the careful choice and placement of pixels. Most Minecraft textures look like someone used the noise function on their graphics program and threw in a few random pixels for fun)
No diamond swords, tools or armour.
Different trees. This makes more of a difference than you think.
Interesting trees are useful! I actually like the method that was adopted by the game Castle Story, which is voxel based (It is! They just did it fancier than Minecraft’s). Trees are objects that grow on top of a voxel, cutting one does turns into several voxel objects that can then be used/manipulated like regular game voxels.
My turn to say something silly (Since most people end up doing it!) I think we should dub this ‘Quaxel Art’. Like ‘Quazi-Voxel Art’. Mostly because it sounds amusingly like quack.