If you are looking for the official Nintendo experience, here are the file sizes for the current main titles: Super Mario Maker 2 Nintendo Switch Super Mario 3D All-Stars Nintendo Switch New Super Mario Bros. U Deluxe Nintendo Switch
Creators have made Let’s Plays without issue, but Nintendo has Content ID claimed some fan game videos. To be safe, avoid using the official “Super Mario” name in your video title. Use “Unistudio Gameplay” instead. Super Mario Unistudio Download
Use (free) or WinRAR. Right-click the archive → “Extract to SuperMarioUnistudio_v2.1.5/” If you are looking for the official Nintendo
As of the latest updates, versions range from Alpha builds to Public Betas. Check for the most recent release to ensure the widest selection of items and themes. Use “Unistudio Gameplay” instead
Downloading fan games is not illegal in most jurisdictions (it falls under abandonware/fan art grey areas), but hosting or distributing copyrighted characters could be. Nintendo could issue a cease-and-desist at any time. That’s why you should download Super Mario Unistudio today before potential removal.
Fan games often use compression or code obfuscation to prevent easy extraction of assets. This looks like malware to heuristic scanners. Submit the file to VirusTotal—if 3/60+ engines detect it, it’s likely a false positive.