Super Mario Land has never been released for PC, so it has no PC system requirements. It came out on Nintendo 3DS, Game Boy. Released in 1989.
There is no emulator for Nintendo 3DS, Game Boy that this site will point you at.
Platforms: Nintendo 3DS, Game Boy.
System requirements for the game New Super Mario Bros.
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System requirements for the game The Elder Scrolls V: Skyrim
