Classic Sonic turning the clock tower can also resemble one of the night stages of when the Werehog changes the time.

In Act 1, there are parts where you can use huge barrels to destroy enemies, much similar to some parts of the night stage of Rooftop Run in Sonic Unleashed.

Some parts in the Stage are also from the Spagonia Town Stage from Sonic Unleashed, such as the Spagonia University.

This is the only positive stage in the Modern era, since this stage throws a celebration while Crisis City is a burning apocalypse and Planet Wisp is a forest destroyed by Eggman's technology.

Act 1's remix for this stage seems to be completely different from the original, unlike most of the classic remixes.

In the original, Sonic went to the Big Tower using springs, while in this version, he uses a Rainbow Ring and Combo Tricks to get to the top of it and ride a rail on the other side.The Act 2 theme for the stage is similar to the original with several enhancements to the violin, melody and bass modifications, and an alternate intro.Therefore it is the Stage with the least amount of graphical enhancements, although the Generations version differs in many ways compared to the original Sonic Unleashed portrayal. This is the only stage in Sonic Generations to have been previously created with the Hedgehog Engine.The Flying Battery Zone releasing the barrels and Aero-Chasers explains why they are there, in Sonic Unleashed the barrels would appear out of nowhere when Sonic got to the top of the hill, and the Aero-Chasers would also randomly fly onto the stage when the others were destroyed. This time around the Flying Battery Zone's appearance makes some of the oddities in Sonic Unleashed make more sense compared to its originally random appearance it had in Sonic 3.In a video showcasing Rooftop Run Act 2, the Flying Battery flies around the city following Sonic, it drops the barrels that roll down the hills and it lets out the Aero-Chasers towards the end of the stage, releasing more when the others are destroyed.The cameo appearance of Flying Battery Zone makes a reference to when it had a seemingly random appearance in the first Zone of Sonic the Hedgehog 3.It seems this celebration is international as every country's flag of Sonic Unleashed is present in the background of the classic gameplay. Spagonia appears to be in a middle of a celebration that was not present in the original version of the stage.Vector: Pick Up the Beat: Pass notes back and forth with Vector until the croc misses the beat.Endless Boost: Boost to the Goal before time runs out to earn the Endless Boost Skill.Rooftop Rail Grind: Go boarding across the rooftops and clear the stage in time.Barrel Ring Bonus: Smash open barrels to get the Rings inside and grab a set number before time runs out.One Ring Challenge 2: Reach the Goal in time with only one Ring.Charmy: Don't Bug Me!: Watch out for Charmy! Reach the Goal in time while avoiding Charmy.Dash Ring 1-2-3: Pass through all Dash Rings in order and reach the Goal before time runs out.High-Rise Balloon Climb: Use the Big Balloons to climb higher and higher and reach the Goal in time.Doppelganger Race!: Face off against Sonic's double and beat him in a race to the Goal.Vector the Crocodile (Rescued character mission for Act 2).The Egg Chasers will act differently in classic stages, chasing him on a 2-D plane. Like Seaside Hill, this stage has a reference to Sonic & Knuckles, in the form of the Flying Battery Zone.Д¬oncept art of the Egg Chaser robot was found in the Sonic Generationsdemo, and was later officially revealed in a set of screenshots along with the Egg Fighter and Egg Launcher. An airship called the Eggman Flying Battery also appears, where Classic Sonic will jump into the airship, while Modern will chase it with three Egg Chasers.

The rolling barrels previously used to break open gates will instead chase Classic Sonic.

A lot of the gimmicks from the night stages of the original Spagonia are in the classic version although many of them act differently. The balloons can be used to bounce to a higher area. A celebration of some kind seems to be partaking whilst the two Sonics progress through the stage, with confetti and balloons decorating the sky, similar to Tropical Resort from Sonic Colors. The visual aspects of the stage are very similar to its counterpart in the Xbox 360/ PlayStation 3 version of Sonic Unleashed.

Sonic generations rooftop run classic