Rockman EXE 4.5 - Real Operation

In Real Operation, the Game Boy Advance itself acts as a PET, allowing the player to control various NetNavis from previous games in the series. The game could also be used with the Battle Chip Gate, a Game Boy accessory that allowed players to use real-life toy Battle Chips for use in the game, a feature that would be carried over to later games in the series. Users of Real Operation can also play multiplayer games against Battle Network 4 users and other Real Operation users. Due to the Battle Chip gate being an important part of much of the gameplay, the game was not released out of Japan for that very reason, due to the accessories, like the e-reader not being very popular in the US. Real Operation is also compatible with the Nintendo e-Reader, which allows for the unlocking of certain Navis, some of which are required to complete the game.