Super Mario Bros. 2 (Japanese version) was the true sequel to Super Mario Bros. It was not released in North America because it was deemed too hard for North Americans. In its place, Nintendo edited a game called Doki Doki Panic and released it as Super Mario Bros. 2. The Japanese SMB2 was eventually relased in 1993 in the Super Mario All-Stars pack, as Super Mario Bros.: The Lost Levels.
This game is not unlike SMB. Some of the graphics have been changed, but the basic game engine is the same. You're still running, jumping, stomping, and collecting Super Mushrooms, Stars, Fire Flowers, Coins, and 1-Ups along your adventure. New additions include:
- Poisonous Mushrooms - They look very much like Super Mushrooms but they have black dots, and do the exact opposite of their red-dotted counterparts. They power you down!
- Red Piranha Plants - Unlike the green ones, these guys will come out of their pipes even if you are standing right next to them!
- Flying Bloober - They float around in the sky as if they were still underwater.
- Bowser's Twin - In a few castles, Bowser's twin is found near the midpoint.
In a few levels, you'll encounter wind that blows you around, and green springboards that propel you so high, you fly off the screen! Adding to the difficulty are backwards warp zones, which take you back to previous worlds.
Each of the worlds is separated into four levels, just like in SMB. After you beat World 8-4, you will either continue on to A-1, or 9-1 depending on if you used any warp zones. More on this here. The final stage of the game is D-4. If you lose all of your lives, you are given the option to continue on the first level of the world you are on, like SMB's continue code.
Objective: Save Princess Toadstool and her Mushroom Retainers, again.