While there isn't a single official "Dead Free Download" entity, there are several popular free tools and games with similar names. Below are reviews for the most likely matches based on recent software listings.
High-fidelity viewing; completely free; trusted industry standard. 3. Crafting Dead: Pocket Edition
Often searched as "Design Review," this is a professional free tool from Autodesk for viewing and marking up 2D and 3D files.
A popular free-to-play zombie survival game for mobile devices.