Are the cubes properly UV-mapped and textured?
If it is a 3D model collection, the provider often lists polygon counts, file formats (OBJ, FBX, Blender), and texture resolutions in the description. If this is a 3D model set, a review typically looks for:
I cannot directly open, download, or analyze the contents of the file "Wood_Cube_collection_compressed.zip."
Review the website, marketplace (like CGTrader, TurboSquid, or a portfolio site), or forum where you downloaded the file. Read user comments and reviews there.
If you can share where you found this file or what you intend to use it for (e.g., rendering, game design), I can give you more specific advice on what to check for.
Does it include common formats for your software (e.g., .blend, .obj, .fbx)?
Are the polygon counts reasonable for the detail level?