How do you play Super Mario Brothers on the computer?

Answer 1

You need a ROM and an emulator.

The ROM is the game file, and it can be found here: http://www.filefront.com/Super+Mario+Forever/%3B8237622%3B/fileinfo.HTML

That one also comes with a ridiculously hard hacked version.

The emulator is like an Nes, in the sense that you need it to play an nes game. My favorite one can be downloaded here: http://jabosoft.com/?categoryid=3

IMPORTANT: this is illegal unless you either: Own the original game or delete the game within twenty-four hours of download.