POKESAV
Pokésav is a program that edits Pokémon Diamond and Pearl saved games, developed by a Japanese programmer named COM. It will work with any Pokémon Diamond or Pearl save file, including those backed up from a commercial cartridge using a cheating device such as the Gameshark Duo. The application can also export Action Replay DS codes, which when activated will provide the same effects in-game as editing the save file.
With Pokésav, players can edit nearly every aspect of the game including Pokémon and their movesets, the inventory, and in-game records. Because of this, many people consider Pokésav to be a "hacking" program used to gain an unfair advantage in competitive play; aspects such as IVs and natures can be freely modified in Pokésav. This brings up questions as to whether the use of the program is ethical.
To combat the usage of programs like Pokésav, Nintendo has banned the use of all Pokémon they detirmine to be "hacked" from online play. This includes such Pokémon with impossible movesets or abilities, such as a Spiritomb with Wonder Guard or a Flying Raichu. However, sometimes Nintendo's servers cannot differentiate Pokésav Pokémon from trained Pokémon, so these legitimate looking Pokémon are always let through.
