Flying Battery Zone is the fourth Zone of Sonic Mania, which is based on Flying Battery Zone from Sonic & Knuckles.
Set on board Dr. Eggman's flying airship once again as it passes through Studiopolis Zone, Act 1 is designed much like the original Act 1, but with a few differences. For starters, the fan platforms from Wing Fortress Zone have been added to the zone, gimmicks from Act 2 such as the spider robot and the swinging black orbs have been ported over, and having a Lightning Shield now draws the player to the electromagnets, allowing them to walk on them in reverse gravity.
In Act 2, the airship dips beneath the sea of clouds and into a storm. By going through doorwarys inside the ship, the player will move to the outside of the airship in which the strong winds of the storm will push them to the left slightly, and they will traverse some familiar level design setpieces from Wing Fortress Zone. If they travel to the underside of the ship, they will find electrical conduits from Wacky Workbench wired all over the place. This time around, they can destroy the mine-like connectors to stop electricity from flowing through them, and destroying the Madmoles controlling them will stop them for good.
In both Acts, there are trash pits full of scrapped Badnik remains that the player can sink into, with the remains being from certain Badniks from Sonic the Hedgehog, including Splats.
In Encore Mode, Flying Battery Zone's foreground becomes a bronze hue with the walkways becoming a light turquoise colour. The interior background becomes an olive green colour, and the sky in Act 2 becomes slightly lighter in colour.
References and Easter eggs