Just let me clear up a few things: First, Mew will appear with or without hidden characters, it's just very rare. Your best bet of seeing it is going to Vs. mode and turning everything off except Poké Balls. Also, Jigglypuff has no requirements. I got him by beating the game on Very Easy with five lives. I'm not sure about the time-thing, though. Ummmmm, that's about it for now.

1p game
Level 1-Link
As cool as he is, Link poses no challenge. Stay away from the tornado and don't let him get too close to any power-ups.

Level 2-Yoshi tribe
Simply stand in one place and use a powerful attack to eliminate all of the Yoshi invaders-one good hit will kill-18 Yoshi's

Level 3-Fox Mcloud
This is a great battle. Fox doesn't have the best recovery skills so hit him with all you got and try to make every hit count

Bonus Game-Targets
Destroy all the targets to get 3000 extra points

Level 4-Mario & Luigi
This fight can be disastorous, these two share most of the same moves so keep them apart and hope you get a good ally.

Level 5-Pikachu
The tiny platforms can work for and against you. Don't let the suprise guests get you. Although Pikachu is challenging & cute he may do something stupid and benefit you.

Level 6-Giant DonkeyKong
You need to rack up around 300% on this guy if you want to get him off. Luckily you have 2 partners and alot of items to do it. Hit him while charging his punch.

Bonus Game-Platforms
simply board all the platforms to get 3000 bonus points

Level 7-Kirby Team
These guys don't give up so keep a good distance and use long range attacks. They have the power of all 8 charachters. 8 Kirby's

Level 8-Samus Aran
Long range attacks will hurt Samus early. She is also very vulnerable to the rising acid pool. Keep her off balance and she's toast

Bonus Game-Obstacles
Run to the finish dodging the obstacles and enemies

Level 9-Clone Team
Use the same technique as you did on the Yoshi team.30 Polygons

The Boss-Master Hand
The master hand has 300% but you can't knock him off the course. Dodge his attacks and preform yours while he is stopped. Note: After he is below 100% his gun attack fires 3 sets at a time not one.

Link-Hyrule Castle
Yoshi-Yoshi's Island
Fox Mcloud-Sector Z of Great Fox
Mario & Luigi-Peach Castle
Pikachu-Saffron City
Giant DK-Conjo Jungle
Kirby-Dream Land
Samus-Planet Zebes

Borrow a Life
When playing a team multiplayer match, if you are defeated, but your team mate still has 1 or more life in stock. You can use one of his life to get back in the action by pressing A+B+Z+Start. Be sure to ask for permission from your friend.

Change Outfits
You can change your character's outfits by tapping the four C Buttons at the character select screen. Some costume changes
are limited to colors, but characters like Pikachu are also available with a hat.

Classic Mushroom Kingdom
To access the hidden classic Mario stage (complete with POW signs, Piranha plants, warp tubes and elevator), beat the game's
one-player mode with each of the original eight characters. It's important that you have the difficulty set to normal and stock set
to three. At the end, the game will tell you that you can now access Classic Mushroom Kingdom in the versus mode.

Get Mew in your Pokeballs
After you get all 4 secret characters, (Luigi, Ness, Captain Falcon and Purin) you can find Mew in your Pokeballs! It takes a
little bit of time, but you'll see one. If you have the Secret Item Menu, set it to all Pokeballs and it will be easier, or go to training
mode. Mew has no apparent effect on the battle.

Item Menu in the Japanese Version
Go to Vs. Mode, pick any 3 computer players and your favorite character to play. Play the "stock" mode, and set the lives to
10. Change the computer handicaps to 5. Play, if you are the victor, to you go the spoils! Enter options under vs., then go to
items switch. You can choose what items will show up and how often they do. Bob-ombs galore! Infinite hammers

Kirby's Power Loss
Everybody knows that Kirby can swallow his opponents and take on some of their powers in this game, but what if you
accidentally "ate" a character you didn't want -- and you want to pursue someone else? Simple: Just press the L Button to pull
of Kirby's "Hello!" taunt and he will discard whatever power he took on.

Music Test
Complete Bonus 1 & 2 with all characters including secret ones and a "music test" option will be on the data screen

Play as Captain Falcon
To play as Captain Falcon, simply beat the one-player game within 20 minutes.

Play as Jigglypuff
To play as Jigglypuff, beat the game within 20 minutes. You must play at normal difficulty with three life stock.

Play as Luigi
To play as Luigi, pass the Bonus Practice 1 with at least 8 main characters. When Luigi challenges you, defeat him and he's
yours.
Play as Ness
Beat the 1 player mode with Normal difficulty and three life stock.

Rotate Characters
You can rotate and view the characters from different angles by entering the character bio section and holding Z. You can use the analog stick to move them around.