Super Mario Bros. 3/World 7

World 7 is called Pipe Maze. Just if you look at the world map, you'll see that this really holds true - it is a giant maze made of pipes that you have to find the right way through. On this map, all the pipes have been colored, and pipes with the same color connect together, which should help you to find the right way.

And just as the world map looks complicated, the levels here are very challenging. It takes very good skills to make it past some of the puzzles presented in this world, and you will need to use all your knowledge to beat some levels.

There are no Hammer Bros on this map. Instead, there are two Piranha Plants, which however are full levels unlike the Hammer Bro fights.

This map has three mushroom houses. The first one on the left offers the standard mushroom, flower, leaf choice. The two other ones, on the other hand, have a Frog Suit, Tanooki Suit and a Hammer Suit available.

Part 1

 * There's nothing really to do here, so enter the door ahead to jump in and get to part 2.

Part 2

 * This is a vertical level where you have to get from the bottom to the top. Remember that in vertical levels, you can go sideways beyond the screen boundaries to end up on the other side, so for example, running off to the left makes you reappear on the right side of the screen.
 * At the beginning, simply jump up all the pipes, and once at the top, take the rightmost pipe to get to the other side. Here, you'll have to dodge or kill the Piranha Plants to enter the pipe at the left which leads upward.
 * Once at the top, you can jump around the blocks to get to a hidden block with a 1-up mushroom inside. The required jump is very tricky, though. Then fall down, and take the left pipe to progress.
 * You can kick the Koopa shell against the left ? block on the ground for a raccoon leaf if you want. At the top you can get another hidden 1-up mushroom if you want, afterwards, climb all the way up to the Piranha Plants.
 * You can stand on the very edge of the pipe without getting hurt by the Piranha Plant, use this to your advantage. At the top, jump on the note blocks and bounce off onto the pipe when the Piranha Plant is not out (it won't come out if you're standing on top of it).
 * If you want to get some coins, go to the right so you appear on the left side, then jump to the pipe at the top to get inside the coin area. Get all the coins, then take the top pipe to appear at the top. Otherwise, just use the blocks to climb up the structure.
 * At the top, there are two green Koopa Troopas patrolling. You can use the small gaps in the ceiling to stomp on them easily (don't kick the shells as it makes it very hard to get through this area). Climb to the top, evade the red Para-Troopa, and enter the pipe to get to part 3. As Raccoon or Tanooki Mario, you can get the third hidden 1-up mushroom beforehand by flying over the red Para-Troopa.

Part 3

 * This is the ending area. Just run across and pick the goal card to finish this level.

7-2

 * The Nippers you see in this level actually walk around. This means you have to be extra careful, especially when they decide to drop down on you from a pipe.
 * The first ? block you see contains a Fire Flower, use the ice block to reach it.
 * When you see an area with a green Para-Troopa inside, drop down. Attempt to get back up and you'll notice that there are invisible note blocks forming a ceiling over the entire area. Go down the left pipe to end up in a water area, then swim to the left and take the next pipe to get back up. You can now use the note blocks to cross the area like a bridge. There's also a hidden 1-up mushroom here which you can get using the note blocks.
 * Get all the way back and take the fourth pipe from the right to go down, then take the next pipe to land in the ending area. Grab the goal card to end this level.
 * Collecting 46 coins in this level unlocks the White Mushroom House. This can only be done as Frog Mario. Enter the level with him, then go down the pipe with a Nipper standing on it to land in a water area. Swim all the way to the left and you'll see some coins and a P-Switch. First collect all the coins, then step on the P-Switch, and very quickly jump into the water and collect all the coins near the water surface. The timing is very harsh and it's extremely hard to make it in time.

7-3

 * This is a "race" of some sorts. Jump at the first block for a starman, then run across and collect the continuous starmen before your own runs out.
 * The star allows you to simply run through any enemies you encounter. Halfway through, Lakitu will join in and start throwing Spinies at you.
 * There's a P-Switch around but it's not worth it, it just makes eight coins appear. There are also some infinite Goomba generators which you can ignore because of Lakitu.
 * At the end, you can try the 1-Up trick from World 5 again, it works on this level as well.

7-4

 * If you're Raccoon or Tanooki Mario, you can fly up at the beginning to get to a secret area with two 1-up mushrooms. Afterwards, return and get into the pipe.
 * This is an autoscrolling water level. Spiny Cheep-Cheep are coming in from both sides. Fire and Hammer Mario have an advantage here since they can knock out many of the obstacles here. The first block you see happens to contain a Fire Flower.
 * After a while, the screen will scroll into a group of Jelectros. You must swim precisely to make it safely across. At the end, you must also avoid the Big Bertha swimming around here.
 * Once you're done with the field, there is another block with a Fire Flower inside. Afterwards, simply swim through the small maze to get to the pipe leading to the ending. There, collect the goal card to finish the level.

7-5

 * At the beginning, just enter the pipe to get into the level. It is a large pipe maze with several possible paths. They may lead to various rewards such as power-ups or 1-up mushrooms, presented here is the shortest path to the exit.
 * At the beginning take the right pipe, then once up get to the right pipe again. Watch for the Bob-ombs at the bottom, and run and duck to get under the brick blocks. Kick away the ice blocks, then jump up and go through the second pipe from the left.
 * Once you've arrived at the top, run over until you see a single brick block blocking the path. Go down the last pipe. Down, watch for the green Para-Troopas and do a running jump up to the next pipe. Once up, go to the right and get through the ice block structure, then enter the pipe at the right.
 * Down, go to the right and jump up to make invisible blocks appear, afterwards return to the pipe and go up again. Go to the left, and when you see the red Koopa Troopa jump again to make invisible blocks appear. Then, run further to the left, get up onto the topmost platform and run all the way to the right. Grab the hidden 1-up mushroom if you want, then go down the pipe.
 * Run across the block "bridge" and take the pipe at the right to get to the ending area. Get the goal card to end the level.