less frequent and if a transfer of info from a Mega Man Battle Network 4/Mega Man Zero 3 link has been performed, certain virus enemies from the Battle Network Series will appear. All enemies drop health items (instead of other items, such as Secret Disks) in Cyberspace. Entering the Cyberspace causes certain Cyber Elves (both Fusion and Satellite, the ones with the A-mark on the lower left) to auto-activate without dying, even if not grown enough to be normally used, and these Elves do not affect the score. However, going into Cyberspace decreases the mission ranking score, making it more difficult to obtain an S or A Rank, which is needed in order to win EX Skills of the end-of-stage bosses. Zero no longer needs to "level up" in order to create weapon combos as they are already in place. The Japanese version also uses the e-reader system to unlock gameplay features are adjustments by scanning the cards to unlock visual changes in the Reistance Base or minor power-ups. In the later Zero Collection and Zero/ZX Legacy Collection this has been changed to an unlockable feature that are require different aspects of the collections to be completed, which also allowed this feature to become available outside of Japan. Secret Disks Throughout the game, enemies may drop Secret Disks, which may contain information about the Mega Man Zero series, enemy information, Cyber Elves, energy capsules, energy crystals or even customization chips. Most of the disks can be opened by Zero himself, mostly those containing Cyber Elves, but the others are locked and the player will have to take them to Cerveau in order to open them. Once opened, their info will be stored in a Secret Disk library featured within the game. Customization Chips The Forms system from Mega Man Zero 2 has been replaced with Customization Chips. These can be found in Secret Disks and come in three types—head, body and legs. Only one of each type of chip can be equipped at a time, which gives the player more flexibility in customizing Zero. These Chips give direct upgrades to Zero's head, body or legs, and can be used to reproduce the effects of the various Forms that Zero could take in Mega Man Zero 2. As with the Forms in this game's predecessor, Zero can take on different colours when different body chips are equipped. Extras As with other