Super Mario Bros. Was originally released in 1985 by Nintendo for the NES and took the gaming world by storm. In 1993 it was ported to the SNES console, packaged with Super Mario 2, 3 and the Lost Levels, aka Super Mario Bros. 2 in Japan.
All-Stars was an instant classic, but many fans also wanted to experience the original Mario Bros 2, aka Lost Levels, in its original 8-bit form. In 1999, Nintendo gave those fans exactly what they wanted in Super Mario Deluxe.
Deluxe is the original NES game, in NES graphics, with no enhancements (apart from glitch removals, including Minus World) but everything else seems to be 100% intact.
On the surface, upon first boot, the game might just look like its Super Mario Bros with a new menu, but there is far more to be unlocked.
A major letdown of the old NES game was that there was no save feature. Deluxe has a save feature. Once you have completed world 8-4, you can now select whatever level you would like to play. Plus, once the game is beaten, it unlocks hard mode, and once you beat 8-4 in that version, all levels become selectable to play at anytime.
The next game mode is challenge. Here you go through all 8 worlds and Levels, with things to look for. 4 red coins per stage. One yoshi egg, and trying to beat the given highscore. It makes for quite the replay value to keep coming back to find all these objects.
Then there's the Lost Levels/Mario 2 Japan, unlocked once you score 300,000 points all up in previous modes. Once unlocked, it's the straight forward Lost Levels in 8bit, however the lettered world's are not present in this version.
Then there is some useless bonus stuff you can unlock. Mostly just images that can be printed If you have a gameboy printer. Ancient tech I doubt anyone would have any more. The images aren't even worthy of screenshots and printing anymore. There's some almost useless Toad fortune telling thing, and a somewhat interesting music creation thing by clicking the Princess. Plus a conpletly useless calender.
Overall, if you've never played this, but did play the NES game a lot, you may get a lot of enjoyment out of this. Of coarse Mario fans will, or have already been drawn to it for many years now. I've enjoyed revisiting it. It's still probably the best game and value for money on the Gameboy Color.