This archive of New Super Mario Bros. Wii's flash site has the following issues:

- The flash site will not load on the WayBack Machine due to nsmbwii-shell.xml?cachebuster=1594053283353 not being able to load, nsmbwii-shell.xml itself is archived and the site will function if downloaded and viewed offline.
- If downloaded, the flash site will only work on the Flash Projector (NSMBShell.swf).
- The Worlds section wasn't archived entirely, and therefore isn't fully functional.
- The "Luigi to the Rescue" video is missing.
- The videos in the "Cooperative" section are missing
- The videos in the "Competitive" section are missing
- The video in the "Free for All" section is missing
- The video in the "Coin Battle" section is missing
- The videos in the "Multiplayer Controls" section are missing
- The videos in the "Power-Ups!" section are missing
- Clicking "Learn More" on any game in the timeline section does nothing in the Flash Projector (untested in browser).
- Downloading wallpapers doesn't work in the Flash Projector (untested in browser).
- Clicking "Buy Now" does nothing in the Flash Projector (untested in browser).
- Clicking "Download Super Mario Bros 3 to your Wii Console!" does nothing in the Flash Projector (untested in browser).
- Clicking the "Newsletter" button does nothing in the Flash Projector (untested in browser).
- The videos in the "Hints and Tips" section are missing.
- Attempting to view the non-flash version of this site will redirect you to the Internet Archive's main page.
- If downloaded, the flash site will only work in the Flash Projector and not a web browser.