If you see a black screen, you missed step 5. The engine is looking for sprite sheets and cannot find them. Alternatively, delete the folder and repeat the copy process.
Version 4.0.0 is a landmark release, introducing: Super Mario Maker World Engine 4.0.0 Download Android Fix
: Ensure you are using the correct variant for your device, such as the "Fullscreen" "Keep Aspect Ratio" versions available on Clear Cache/Reinstall If you see a black screen, you missed step 5
: The online community features (when servers are active) allow players to share and download levels globally, effectively bypassing the shutdown of the original Mario Maker Wii U servers. For fans who don't have a Nintendo Switch, SMMWE 4.0.0 Version 4
Players can now create and explore expansive world-style maps.
Credentials and methods were overhauled to allow world levels to be saved and loaded reliably on mobile.