it means you have to play 600 matches in vs aka mutiplayer
From IGN.com "Clear Event Match 29 or play more than 600 Vs. matches. " A link to a guide to all unlockables in the game has been added below.
Go on Single Player mode and you will see Event Matches mode.
Play as Marth on classic mode (no continues) or play 900 vs matches.
SSBM does not work with a cheat code system. I unlocked him at somewhere around 200 to 500 COMPLETE vs mode matches, just hooked in a P2 controller and made them jump off. Sorry I couldn't give you an exact number of matches needed, I'm at school and they block most websites having any affiliation with games and info about games.
jigglypuff- 50 vs. matches, clear classic or adventure dr. mario- 100 vs. matches, clear classic with mario pichu- 200 vs. matches, event 37 falco- 300 vs. matches, 100- man melee marth- 400 vs. matches, clear classic or a vs match with all 14 original characters young link- 500 vs. matches, clear classic 10 times ganondorf- 600 vs. matches, event 29 mewtwo- 700 vs. matches, 1 vs. match for 20 hrs. luigi- 800 vs. matches, clear adven. with time ending in X:X2:XX then finish adven. roy- 900 vs. matches, clear classic with marth mr game & watch- 1000 vs. matches, clear classic, adven., or target test with everyone
finish the first adventure level when the seconds is a 2 and beat adventure or play 800 VS matches
play 1000 vs matches to unlock character 25, Mr. Game and Watch. There are no characters after that.
Play 200 vs. matches or clear event match 37. Next you will fight Pichu in the Pokemon place!
there are only 2 ways to unlock mewtwo on ssbm. 1) play 2 player for a total of 20 hours 2) play a bizzare amount of matches (i forgot how many but its a LOT!!!!)
Its simple. Just go to the single player mode and go to events. Fight through until you get to Event 29: Triforce Gathering. Kill him with the help of Zelda who sucks! Battle him again afterwards, defeat him and you got him.
play as bowser in green greens 10 times
Mine is Sonic,Lucas, and toon link that is an opinion question(meaning that people think snake is the best, or Ness, Mario, Peach etc.)Sonic Lucas and toon link are only on Brawl. On melee, Ganondorf is VERY powerful, and I prefer to use him (Octopus324)MARIO.Forget that last thing I said about Ganondorf. Mewtwo and Mr. Game & Watch are awesome! (Octopus324)