Here you'll find a whole bunch of vertical rooms. You'll have to go up and then travel down to get inside. But stay sharp, because you're going to meet up with lots of Sparks. Watch your step at the very end. Mouser (or Robirdo if you're playing Super Mario Advance) is waiting for you!

Balanced character selection

You're not done with Luigi yet. Normally you choose Mario for these intense third areas of each World, but Luigi has some tricks up his sleeve that can dramatically cut down the amount of time you spend here. And he's plumber enough to take Mouser on too.

(1) Sub-space 1 and Double POWs! Here in map B, you'll find something really weird. If you have a POW inside Sub-space, and Sub-space disappears, you'll get two POWs! Don't forget to take the Mushroom before lifting the darkened POW up high. You'll still be holding on to the copy when you return.

Which door will you choose? There are three—count 'em—three doors here. Which one should you pick? The center door has a dead-end. The door on the left is locked. Now the door on the right has potential. There's a key at the top. Get to the top floor and take the key. Then try using it to unlock the door to the left.

Max out your lives in Advance: Super Mario Advance adds a score to the mix, along with the possibility of earning extra lives by defeating enough enemies with one attack. This makes it possible to use the new super sized POW block at the entrance to map C as an effective way of maxing out your lives. Run left until you see some Ninji and Sparks, then toss the block and chase after it. You'll earn plenty of points and some extra lives as well. Then exit out back to map B and return to repeat the process all over again.

(2) Sub-space 2. There's a Mushroom hidden above door E. You can get to the Mushroom if you drop the Potion between the door and the ladder, but look out for Ninji and Spark. They will do everything they can to give you a hard time. If it helps, you can use a POW to do them in.

(3) Shyguys pop out of the jars. Bad news is heading your way fast. Shyguys are coming out of the jars one after another. Don't even try to tangle with them. Move sideways and go up and down the steps to avoid them.

(4) Find what you've been looking for. Here's the key that unlocks door E in map C. When you take it from the Key Room, Phanto will come after you. You must work fast to get the Key and avoid taking damage. Drop the Key when necessary, and keep an eye out for marauding Ninji. Be careful: If you drop the Key and move off-screen, you may have to track it down all over again.

More extra life advancement: Another opportunity to earn extra lives in Super Mario Advance can be found at the top of map D. Pluck out the grass next to door F for a Shell. Carry the Shell down and toss it next to door C. The Shell will bounce back and forth, taking out all of the Shy Guys that fall into the pit. Soon you'll start earning extra lives. Stand in a safe place and the action for up to 99 extra lives.

Platform Mania

This stage has several tall rooms with lots of platforms that will test your skills. Using the "wraparound" in some rooms will be useful. Walk off the right side to appear on the left side and vice versa. If a POW block is available, you can wait for several enemies to build up in an area and use the block to eliminate them all at once.

(5) A Super (Luigi) shortcut. If you enter this room through door D in map C, you will arrive at the bottom of the map. After scaling to a certain height, you will find that you have no choice bu to turn around and try a different route. Unless, that is, you are Luigi. If so, grab the Ninji that you find at the bottom of the room, and carry him all the way up to the dead-end. Then set him down next to the wall, and jump on top of him. Squat down and charge up for a Power Jump, and leap off Ninji's back at the height of his jump and you move ahead directly to door G. Don't bother going through the door, just keep climbing. With this trick, you don't even need to collect the key from map D!

(6) Beware of those hot flames. Uh-oh, check out these two dangerous Pansers on the platform below. Stay on your toes or they'll hit you. Just keep moving, and don't hesitate. Cross over pronto, and you'll make it to the chains on the right that lead to door H.

(7) Take your time, but keep moving. If you used the key, you'll start at the very bottom of this room by door E. Sparks really know how to fly, and they are after you! Your best escape plan is to make small, steady jumps. That should keep you at least one step ahead of them. When you reach door G, you'll have to pass through to map E since climbing any higher will result in a dead-end.

(8) Take a breather here. Hidden in this little patch of grass is a POW. Use it to get that Spark out of your way for good. And don't forget to pick up some cherries on your way. An appearance by Starman will help make the next few seconds of your climb hassle free.

(9) There's the goal! Congratulations! You've made it to the exit to map G. It wasn't easy getting here, but now you're really getting close to your goal. Keep up the good work!

Super Mario Advance Mushroom

n the original version of the game, climbing the ladders above door G served no purpose. However, in Super Mario Advance, You can unearth a potion beneath a patch of grass and drop it in the vicinity to create a door to Sub-space. Step inside, and you'll find a third hidden mushroom. It will surely come in handy when you go up against the new Super Mario Advance boss in this world.

Turtle power. Although you find a Turtle Shell in the lone tuft of grass after you arrive in map G, you may be surprised at how ineffective it is against an army of leaping Ninji. They have to be down on the ground in order to get hit, so don't assume the shell will wipe out all them. Be prepared to jump. At the end, grab the Crystal Ball and head through the hawkmouth gate.

Original Boss: Mouser

(10) This is it: your last face-off in World 3! Now it's time to make peace in World 3. But first you'll have to deal with an old enemy. The mini-boss is Mouser, but you know how to deal with him from World 1-3. Catch the bombs and let him have it with six of them (or five in Doki Doki Panic.)

Super Mario Advance Boss: Robirdo

That's right, if you reach the end of World 3 in Super Mario Advance, you won't be facing off with Mouser again. Rather, you'll face a brand new boss known as Robirdo. As a rather large mechanical version of Birdo, it is similar to Birdo in that it spits out eggs for you to catch and use against it. However, that's where the similarity ends. Every now and then Robirdo becomes very active, revs up, and tries to crash into the wall with you in the way. The best way to avoid this kind of painful collision is to jump up into the air and hang on to the chains that dangle from the ceiling. A lot of your time will be spent waiting for Robirdo to regain its composure after rebounding off the wall. Every now and then, Robirdo will jump into the air and slam back down on the ground, causing an earthquake. This rumbling will stun you if your feet are touching the ground, so be sure to jump before Robirdo lands. It takes five egg tosses to knock Robirdo off its feet.