World 8-3 (Super Mario Bros.)

World 8-3 is the third level of World 8 in Super Mario Bros. It is notably the only third level of a world in the game to not be of the athletic level type, meaning it isn't based around jumping from high platforms over pits. Instead, this is a mostly-flat overworld level taking place within the final castle's exterior walls.

Layout
The player begins in front of a Bill Blaster, which is followed by a Koopa Paratroopa, another Bill Blaster, and a pipe with a Piranha Plant. After the pipe is a duo of Hammer Bros. that jump between two rows of Brick Blocks, and in the second to the right block of the top row is a power-up. After a small staircase, a Bill Blaster, a Koopa Paratroopa, and some stone pillars is another Hammer Bro. duo, and in the second to the left block of the top row of Brick Blocks is another power-up. Beyond a pipe is a row of Hammer Bros., and at the end of the last castle wall is a hidden Coin Block (which is in plain sight in the Super Mario All-Stars version of the level). After some small Hard Block platforms is the Goal Pole.

Super Mario Bros. Deluxe challenges
In Super Mario Bros. Deluxe, the player can collect five Red Coins, find a hidden Yoshi Egg, and get a medal based on their score. The Yoshi Egg is found in a Hidden Block directly above the left of the castle decal after the second set of Hammer Bros., and the score to beat is 28000. The Red Coin locations are:
 * Directly above the fortress at the start of the level. A Hidden Block can be found to the left
 * Above the top row of Brick Blocks with the first duo of Hammer Brothers
 * On the small stone steps
 * In a newly placed Coin Block in the center of the top row of Brick Blocks with the second duo of Hammer Brothers
 * Above the floating blocks at the end of the level

Enemies

 * Bill Blasters
 * Bullet Bills
 * Koopa Paratroopas
 * Piranha Plants
 * Hammer Bros.

Level statistics

 * Power-ups: 2 (Super Mushrooms or Fire Flowers)
 * 1-Up Mushrooms: 0
 * Secret areas: 0

Mondo 8-3 (Super Mario Bros.)