World 8-1 (Super Mario Bros.)

World 8-1 is the first level of World 8 in Super Mario Bros. It is the longest level in the game.

Layout
The player starts on a path with a Buzzy Beetle leading a row of Goombas. Past a pipe with a Piranha Plant and some Koopa Troopas are gaps the player can simply run across, followed by another Koopa Troopa and some more Goombas. Between the next two pipes is a Hidden Block containing a 1-Up Mushroom, and the next second pipe over leads to an underground area, which exits out of the pipe immediately after. Following a row of Koopa Troopas and Goombas is an enclosed area with a Koopa Paratroopa, in the middle of which is a Hidden Block that can be used to reach a Coin Block directly above. After some gaps and more Koopa Paratroopas is a row of Brick Blocks, with the third from the left containing a Super Star. Past some more gaps, a row of Goombas and a Buzzy Beetle, some pipes, and a stone staircase, there is a large gap with a narrow platform in the middle of it. After some more Koopa Troopas, pipes, and stone pillars 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 narrow platform in the large gap, and the score to beat is 40000. The Red Coin locations are:
 * Over the final gap near the start of the level
 * In a new Coin Block in the underground area, placed at the left-most block of the row of Brick Blocks
 * In the Coin Block above the Koopa Paratroopa
 * In the right most Brick Block of the row of blocks that contains the Super Star
 * Between the two stone platforms with a Koopa Troopa just before the narrow platform in the large gap

Enemies

 * Buzzy Beetles
 * Goombas
 * Piranha Plants
 * Koopa Troopas
 * Koopa Paratroopas

Level statistics

 * Power-ups: 1 (Super Star)
 * 1-Up Mushrooms: 1
 * Secret areas: 1