Immediately after however, said Eggrobo appears in an Egg Mobile with a hook claw attached to it. Having arrived in Sky Sanctuary Zone via a Warp Point, Knuckles finds himself looking for the Eggrobo he has been chasing all over the Floating Island. Following their final battle, Sonic and Tails run up a corkscrew ramp to the top of a tall floating landmass that literally crumbles and falls beneath them, then leaps aboard the Death Egg. After the series of battles however, Sonic defeats Mecha Sonic Mk. At various points of the Zone however, Sonic is forced to fight Mecha Sonic Mk. Along the way, Sonic and Tails are also forced to battle numerous Eggrobos. Knuckles briefly helps Sonic and Tails by activating a bridge in the Sky Sanctuary Zone, but he is not able to continue any further due to exhaustion from the events in Hidden Palace Zone. Having arriving in Sky Sanctuary Zone via a Warp Point, Sonic and Tails are subsequently forced to jump from platform to platform, climbing up the Zone and chasing the ascending Death Egg before it rises too high into orbit. At ten minutes, which is the normal time limit for the Zone, Angel Island disappears under Sky Sanctuary Zone. Also, in Knuckles' version of the Sky Sanctuary Zone, Angel Island continually descends in the background as the player spends more time in the Zone. The Master Emerald sits near the right of the arena. All that is seen of the Zone is a dull, flat arena where Knuckles faces Mecha Sonic Mk. In Knuckles' story, the Zone overlooks Angel Island, floating far away amongst the clouds. The stone pillars are all a weathered yellow in color, and vines grow unrestrained everywhere.

Only the tops of the towers are ever seen, as the Zone takes place towering above a thick sheet of clouds, but the whole of the sanctuary is believed to float in a manner similar to Angel Island. The Zone features sparse bridges and beams connecting them. Sky Sanctuary is composed mostly of pillars and towers that appear to bear some type of Roman or Gothic-style architecture.

How many zone are in onic 3