Also, you can play versus(and survival, if you get the GOTY edition) offline by selecting join friends, the pressing X to start your own lobby, it tricks the game into letting you play the modes. Why there wasn't just an offline option on the main menu is beyond me.
Visa - Digits two through six are the bank number, digits seven through 12 or seven through 15 are the account number and digit 13 or 16 is a check digit. MasterCard - Digits two and three, two through four, two through five or two through six are the bank number (depending on whether digit two is a 1, 2, 3 or other).
I'm not sure if you're asking what the card number is on a Visa debit card, or if it is different than a Visa credit card... so I will try to answer both. A Visa card # is a 16-digit number, that uses a specific format. In order to be a valid number, the 16 digits have to work within the Mod 10 algorithm. All Visa numbers start with a 4. MasterCard numbers start with a 5, Amex is 3, and then there are a few others, including Discover card, etc. A Visa Debit card is tied into your bank account. So if you make a $100 purchase and use your Visa Debit card, then it will deduct the $100 right from your bank account. You typically have PIN # that you need to type into a PIN pad if you're using your card in a debit card transaction.