Sky Sanctuary (Sonic Generations)

Sky Sanctuary is the third level in the game Sonic Generations. It appears in the Genesis era of the game, representing Sonic 3 & Knuckles. EggRobo appear in this stage as Badniks in both Classic and Modern versions. Also, the spinning tops from Marble Garden Zone are used. The boss stage for Sky Sanctuary is the Death Egg and the boss is the Death Egg Robot.

Act 1

 * Doppelganger Race!: Face off against Sonic's double and beat him in a race to the goal.
 * Eggrobo Rush: Reach the goal in time while fending off a bevy of menacing Eggrobos!
 * Aerial Paradise: Use Warp Points to make your way to the goal in the allotted time.
 * Ring Time Challenge: Use Ring Time Triangle/Y to get a set number of Rings and reach the goal in time to earn the Ring Time Skill!
 * Amy: Topsy-Turvy: Race against Amy while riding on a spinning top and beat her to the goal.

Act 2

 * Knuckles: Buried Treasure: Press Triangle/Y to make Knuckles dig up Medals! Collect a set number and reach the goal in time!
 * 200% Boost Gauge Challenge: Your Boost Gauge is doubled. Use the Boost Gauge to reach the goal in time.
 * Balloon Bonanza: Use balloons to bounce extra high as you make your way to the goal in time.
 * Doppelganger Race!: Face off against Sonic's double and beat him in a race to the goal.
 * High-Speed Hijinks: Enemies move and shoot at double speed. Get to the goal in time!

Act 1
Classic Sonic's goal in this stage is to reach the goal post in time. First you must run through numerous ancient floating buildings in the sanctuary. Then almost at the end of the stage, you will have to run up a collapsing path that will lead to the goal post. This is similar to the end of the original level in the game "Sonic & Knuckles."

Act 2
The 3D section of this stage is similar to the Act 1 stage. You must speed your way through numerous ancient floating buildings. Similar to Act 1, Sonic must run up a collapsing path that will lead to the goal.

Characters

 * Sonic the Hedgehog (Classic and Modern)
 * Knuckles the Echidna (Rescued character, Mission for Act 2)
 * Amy Rose (Mission for Act 1)

Enemies

 * EggRobo

Trivia

 * In the Sky Sanctuary Hub, there are trees with grapes growing on them. In the manual of Sonic & Knuckles, it mentions that Knuckles favorite food is grapes.
 * Knuckles is one of the five characters that are saved and appear in a stage of that game, the others being Rouge (City Escape), Espio (Seaside Hill), Blaze (Crisis City) and Charmy (Planet Wisp).
 * The crumbling ground from the end of the original level is featured in both acts.
 * The Death Egg is seen rising in the background of both acts.
 * The original level is actually from Sonic & Knuckles; a Sonic 3 level was not featured in the game. This level is meant to represent Sonic 3 & Knuckles, the combined version of the two games.
 * As well as Green Hill, when boosting in this level, the music speeds up to a faster tempo.
 * Even though Classic Knuckles was in the original version of Sky Sanctuary in Sonic & Knuckles, he wasn't seen in this version of the stage.
 * Despite being a classic stage Sky Sanctuary is the first 3D stage to take place on Angel Island since Sonic Adventure's Red Mountain.

Trailer
thumb|left|400px|Trailer featuring Sky Sanctuary