It depends on what game you are playing. Some games have you enter the cheat frrom the pause menu, while others have you enter it during gameplay.
Go to cheat code and enter it
Go to My 2K9 then u will see the option enter cheat code Then go there and enter,enter,enter!
It is ak4h2. To enter any cheat codes, you have to go to Deadpool's room in the Helicarrier and enter the code into the first computer in the room.
to enter cheat codes on sikids just go to the search box and type in code redemption and then click on it and enter your code
go to where it says 'extras'and it should say 'enter cheat code entry'.
go on the unlock code and enter 1111 and done
go to the cheats then the cheat list then find the type of cheat/code you're going to put in
yes on the main menu go to options select cheat codes and enter enginpwr as a code to unlock snot rod
To enter the code, you have to go to the map, click on start and then on 'Extras.' Once you're on the 'Extras Menu' go to the bottom of the list and click on 'Enter Secret Code.' The game will direct you to the 'Enter Secret Code' page. It should have four pictures of 'Cannonbolt.' After that, put in the cheat code.
go to the bottom of the other cheats to `add new cheat' and press b and enter the code
go to the options menu and find "enter cheat code" then just type away. its that simple :)
MVY759 is the code to unlock Nightwing on Lego Batman: The Video Game for DS