Years ago, I made a whole series of levels in Super Mario Flash (http://www.pouetpu-games.com/index.php?section=2&game_id=1&w=640&h=480)
I have not released these completed levels until now. There are 40 regular levels, from "1-1" all of the way to "10-4," as well as two final challenge levels. That means that there are 42 total levels. The level design is reminiscent of the original Super Mario Bros., with 8 standard worlds, two bonus worlds (9 and 10), and two final levels which are extremely difficult.
The level codes can be downloaded here: http://www.mediafire.com/download/dodd8iuh8ddujir/SMFLL.zip
A "Read Me!" file is enclosed. It is recommended that it be read so that it may be known how to get the codes into the game.