Yes it can destroy your game as well.
i guess.. all the crazy information and glitches make your game go crazy
games I'm pretty sure
All of the action replay codes are long because there are so many different codes and games. As a result the creators of the action replay has to make the codes very long so your action replay can identify the code.
Action Replay is a hacking device for video games that allows you to add, make, and share codes for thousands of games on a bunch of consoles, including Nintendo DS and Nintendo DSi.
Its the same with all DS games.
To make action replay codes for not only LoZ: Phantom Hourglass, but for all games, go to http://us.codejunkies.com/Departments/DS-and-GBA.aspx, and buy the NDS Trainer Toolkit. You can then be able to make your own codes for a wide varaity of action replay codes! Thanks for asking!
Use Action Replay Manager on your PC
What do you do when action replay has no free space when you have no codes?
Answer: Probably. I mean they are trying to make money aren't they?
no action replay code can make kyogre appear
action replay works by intercepting the game from talking to the system and telling it to listen to it instead of the game. it will do nothing to the game itself, it may however make you console get slower over time and can mess up you files you save while using the action replay.
Action Replay is a device that will give you cheats to put onto certain games, but you have to finds the codes to put into it before you can use it, you also have to use a Master Code. Which will make the codes work.