Second Course (Gold Classics Pack)
From the Super Mario Wiki
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This course is based on stages from Super Mario Bros. 3. The level starts on a typical Super Mario Bros. 3 Coin Heaven, now filled with 10 Gold Coins and Giant Coins. The end pipe leads Mario to the main level, which is based on World 1-1. This level is mostly unchanged; the white block at the middle of the level was changed to a magenta block, and some hidden blocks and Red Blocks were added.
Near the Koopa Paratroopas is a pipe not found in the original level; it leads Mario to an area based on World 1-5, with the final area before the end pipe removed. Additionally, a Beanstalk replaces the pink Note Block (though a normal Note Block is present) which leads to the bonus area found in World 1-1, except the coins form the numeral "2" instead of "3".
The elevated pipe at the end of this level sends the plumber to an area based on the Battle Mode stage of Super Mario Bros. 3 (which in turn is based on the first phase of Mario Bros.). Also, a secret path at the very end, which can be opened only with Raccoon Mario or Gold Mario, leads Mario to a black underground area made of small pipes, where coins, 10 Gold Coins, and Giant Coins fall from above near the Red Flagpole, alongside a Roulette Block.
Just before the end of the level, a gap in the Brick Blocks can be seen. Mario must break the Brick Blocks using a Super Leaf or Gold Flower and take them to a secret flagpole, while many coins fall from above before Mario reaches the goal.