Unlock Evil Ryu	
You must go to the auction room and trade a certain amount of Raity b cards to Kana for her to give to you

Unlock Geese		
You have to beat Nishi for the first time you fight him(Nishi is in the auction room)

Unlock Haohmaru	
You can unlock Haohmaru by trading Chris rarity A cards(his cards change so meet up with him later)(He is located at the Resident evil Mansion)

Unlock Kyo (P)		
You must trade kana rarity B cards at the aution room

Unlock Tri-Quiz	
You have to trade a Morrgain to a person in Neogeo world

Undo mistake
To undo the mistake of using the wrong card, reset the game and resume from the last turn.

Hidden Title Screens
Once you have collected 50%, 90% and 100% of the cards, you will be able to see a new title screen. 

Mech Zangief Card
Collect five coins and return to Joy Joy. Find Yosiki and challenge him to a game. Defeat him in the first game to recieve the Mech Zangief Card. 

Mega Crush Card
Break the Dust Dragon to open the back room in the Lost World where the Mega Crush Card is located. Now, win the tournament, then return to the back room. If Mask is in the room, the cabinet will be unlocked and you can get the Mega Crush Card. 

Neo-Geo World Auction
Beat the game, then return to the semifinals room for a card auction.

Special appearances
Some of the characters appearing in this game are actually based upon people who have worked on games made by SNK or Capcom, for example, the character at the Resident Evil Mansion, named Mikami; named after Shinji Mikami, the producer of the Resident Evil series for Capcom.

Quick Select
In the middle of the round, enter the following to get these effects:
Ring Character: 	Up+B
Your Discards: 		Left + B
Enemy Discards: 	Right + B
Status: 		Down + B