Good WalkThrough: by Yosho

Onett:
Ness wakes up. Go outside and head toward the meteorite. You can't see it yet, so talk to Pokey. Then go home.
You wake up, answer the door, talk to Pokey and say you'll help him. Take King and head to the meteorite again. Picky will be there. Grab Picky and BuzzBuzz'll appear. He joins you. Head home and BuzzBuzz will kill Starman Jr. on the way. At Pokey's house Lardna will kill BuzzBuzz and he gives you the sound stone. Then go outside. The arcade is full of sharks that you have to beat and then fight Frank and FrankyStein MarkII.  
Afterwards, go see Pirkle  and he'll give you the key to the shack. The shack leads to Gaint Step where you fight Titanic Ant. Then go to the police station and fight the police force.
Captain Strong opens the way to Twoson.

Twoson: 
You arrive in Twoson to find that Paula was kidnapped. Go to Burglin Park and fight Everdred. You then talk to Apple Kid, give him $200 and food and go to Peaceful rest Valley. When you see the pencil, go out the cave and you'll get a call on the receiver phone. Go to the park and find Apple Kid. He gives you the pencil eraser. Use it in Peaceful Rest Valley to erase the pencil and continue to HappyHappy Village. Go get the Franklin Badge from Paula in the cabin jail and then go to the big building to fight Carpainter. Carpainter will give you the key to unlock Paula. Well, what are ya waitin' for? Go recue her!
After she joins you, go to the east cave. This is where Mondo Mole guards the 2nd Sanctuary: Lilliput Steps.
Go back to Twoson and take Paula home. Her parents will let her go with you so go see Everdred and receive $10,000 then talk to the Runaway Five and get a backstage pass. Go see the runaway Five show and then use the wad of bills to pay off their debt. This way, they can take you to Threed. All aboard!!!

Threed:  Threed is zombie infested and the citizens are in panic.  Avoiding zombies, go through the west graveyard and up to two zombie guards. Then go to the hotel and follow the mysterious lady until she sics an army of zombies on you and Paula calls Jeff.

Winters: Jeff wakes up and you hear Paula's call. Tony joins you. Go get the bad key machine and raid the lockers. Go to the store and get Bubblemonkey. Then you go south 'til you meet the Tessie-watchers and spend the night there. The next day, Bubblemonkey and you can ride Tessie further south. Go through the maze and meet Brickroad, then go through Pond Cave to Stonhenge and then to the lab.
Dr. Andonuts lets you take the Skyrunner but it breaks when you reach Threed.

Threed: Jeff joins you and you escape. Go south and defeat Boogey Tent and get fly honey. You later get a call from Apple Kid and the Pizza Guy gives you zombie paper which you place in the circus tent. Stay at a hotel and the next morning the zombies will be trapped. Haha!!! Now you can proceed to Saturn Valley through an underground pathway.

Saturn Valley: The Mr.Staurns let you rest here. Then you go up to Grapefuit Falls. When the guard asks for a password, stand sill for 3 minutes, then enter.
Make your way to Belch and use the fly honey to defeat him. Now go back to Saturn Valley.
You can now reach the cave to Trillionage Sprout. Beat him to reach Milky Well.
When you go back to Threed, the sun's shining and you can take the bus to Dusty Dunes Desert.
Get off the bus and visit the miner near the tunnel to Fourside and give him some food. Proceed to Fourside.

Fourside: Go to the Monotoli building and talk to stupid lard-butt Pokey. Then go to Topolla and talk to the manager and go back to the Desert. The miner has now dug a huge maze and you must beat the 5 moles inside. Now on your way back to Fourside, the other miner gives you a diamond. Give this to the Topolla manager and the Runaway Five are free again. Now the Dept. Store is open. go in and get all the supplies you need and give all the useless junk to Paula. When you try to exit, Paula is kidnapped. Venture to the office on the top floor and beat the Dept. Store Spook. Then go to Jackie's Cafe and talk to the lady standing against the right wall. Then go outside and see Everdred. Go back inside and look behind the counter and, SUPRISE! It's Moonside! Talk to people who warp you and pretty soon you'll be in a doorless room. Talk to the guy who is hard to see and then talk to Mr. T who warps you outta there. Go see the guy guarding Monotoli and he'll let you through. Beat ManiMani and return to Fourside.
Apple Kid wil call you then go to Talah Rama's hole and get the yogurt machine. Then learn teleport from the monkey. Go back to Fourside and give Electra the yogurt machine. Go to the 48th floor of the Monotoli building and meet the Runaway Five. Rescue Paula and go see Pokey at the heliport. Go to the Runaway Five bus and go to Threed. Fix the Skyrunner and go to the lab. Beat Shrooom at Rainy Circle and then return to the lab. The Skyrunner can now take you to Summers.

Summers: Crash-land on the beach and go get the number for the Stoic Club. Go there and talk to the woman who makes magic cakes. Go outside later and eat some. Now you're Poo in Dalaam. Go to the bottom fo Dalaam and go to the place of Mu. Answer yes to all your ancestor's requests and go back to the palace. Now teleport to Summers and join Ness. Now go to the museum and bribe the guard. he'll give you a heiroglyph. Go to Fourside and talk to Mr. Spoon. Give him Venus' autograph on a banana and return to him. Go through the sewer to Magnet Hill and beat the Plague Rat of Doom. Get Carrot Key.
Go to Dalaam and use the carrot key to delete the rabbits and proceed to Pink Cloud where you beat Thunder and Storm (use PSI Flash). Back to Summers
Go to Toto and talk to the Sailor. He'll take you to Scaraba, but you have to beat Kraken on the way.

Scaraba: Go to the Pyramid and read the Heiroglyph. Then step on the tiles in that order and the door will open. Enter and proceed through the pyramid and you will come to a dead end room. Step on the tile and go back to the room with the casket. Drop dowm the hole and proceed. Fight the guardian General and proceed to the hawk eye. Once you have it, exit and meet the Starmaster. Say buh-bye to Poo for a while. Go up and talk to the noble warrior and head Northwest to Dungeon Man. Enter and go to the top floor to talk to Brickroad. Then exit through the Return Hole. Walk south 'til he gets stuck in some trees. Talk to the warrior and re-enter Dungeon Man. This time use the Goodbye hole and go to the Yellow Sub. Once Jeff fixes it, use it to get to Deep Darkness.

Deep Darkness:  Arrive via submarine and proceed to the waters once shrouded bye darkness, use the hawkeye to light the way. Plod through the water and try to avoid the deep water and make your way through Deep Darkness (if you see the helicopter, you are going the right way). Once you encounter Master Barf, Poo will use Starstorm a to beat him and will rejoin you. Now keep going to Tenda Village. The Tendas are very shy so they don't talk to you. You need the Overcoming Shyness book from Apple kid. When you leave Tenda Village: Apple Kid and numerous others have been kidnapped. Go to the lab and get the Eraser eraser and go to Stonhenge Base. Make your way past the legions of Starmen and you'll find the kidnapped victims in pods with no air. The next room is  where you find Starman DX. He'll call for help, but don't worry, just beat him and the others will disappear. Now, it turns out that Apple Kid returned the book to the library so go to Onett and retrieve it. Bring the book to the Tendas and one of them will open the way to Lumine Hall.  Go through the maze and beat Electrospecter. Inside Lumine Hall, go down a hole  and end up in the Lost Underworld.

Lost Underworld: Once here, go up, then right to another Tenda Village. Talk to the mystery rock. Stock up on supplies and go SouthWest to a cave make your way through the firey maze to Fire spring. Fight Carbon/Diamond Dog and go to Fire Spring. Ness goes into a dream sequence and now you're in Magicant. Go to the Sea of Eden (easier said than done) and fight Ness' Nightmare. Once you beat it your power will intensify and you will wake up at Fire Spring sans soundstone. Now teleport to Saturn Valley.

Saturn Valley: Dr. Andonuts is working on the phase distorter but he needs Zexonyte. Go to Onett, which is now dark and monster-full, and get some Zexonyte from the meteorite. Save your game here then never do it again (trust me). Give this to Dr. Andonuts and you will warp to a strange place where Poo learns Starstorm W.  Now Dr. Andonuts will operate on you and make you robots to travel to the past. Do this and you are on the road to Giygas. Once you go the the end of the cave, Pokey will greet you and you fight.
Round One: Have Paula use shield S while you focus on beating Pokey.
Round Two: Attack Giygas with PSI Special, Freeze and Starstorm.
Round Three: Have Paula pray 9 times while the rest of you do nothing or keep using life-up on Paula.
Round Four: There is no round four. You're done. All you have left to do is walk P aula home and go home. Coolie!!
Buh-Bye I'm gonna go eat some flan now..........