Crisis City (クライシスシティ,Kuraishisu Shiti?) is the seventh Stage in the console/PC version of Sonic Generations. It represents Sonic the Hedgehog (2006) in the Modern Era of the game. A rival battle with Silver the Hedgehog is also fought here and can be accessed from the level hub. This is likely part of an alternate timeline, or before it was erased from the timeline, as the events of Sonic the Hedgehog (2006) were negated due to its ending.
Classic Sonic, as usual, has to get to the Goal Post. However, a fire tornado blows the piece of building it's on away. He must chase after the Goal Post and avoid the tornado's winds in order to finish the level. At the end of the stage, Classic Sonic has to push his way through a gale that is constantly blowing him back.
As with previous acts, Sonic's mission is to reach the goal ring. He must cross fiery chasms and lava pits, before running toward a fire tornado while dodging the debris it throws at Sonic.
Both the classic and modern remixes from this stage is very different from the original version. It is heavier, but still sounds like the original.
The classic remix also bears a resemblance to the main theme of Mortal Kombat.
Music very similar to the classic remix of this stage is played during the Gravity Falls episode Dipper Vs. Manliness, when Dipper is riding on the back of the "Manotaur".
The music at the 1:58 mark is sampled from part of the Power Sneakers' jingle.
If you look to the lower right hand side of the hub world, you can see a rusted sign saying "Central Park".
This sign also appears at the very beginning of Act 2, alongside another rusted sign that says "Chao Garden".
The last part of the stage, where Sonic rushes towards the tornado of flames down a ruined highway, as it throws debris at him, is, curiously, in reverse to the original level, where Sonic had to run down a highway away from the tornado as it threw debris at Sonic.
Sonic does not use a snowboard in this level, as he did in Sonic the Hedgehog (2006). The most likely explanation for this is that City Escape already used a snowboard.
In the "Blaze: Piercing the Flames" mission, Blaze can also be used to defeat Iblis' minions.
This is the only stage in Sonic Generations with no robotic enemies.
According to Takashi Iizuka, there was going to be a cutscene when the Sonics completed the stage, but it got cut.
Technically, this level should not appear, since the events of Sonic the Hedgehog (2006) were erased and thus did not happen. However, Eggman says that the Time Eater can "erase time and space," and Classic Tails' says "When that thing goes through time it tears space apart, leaving the areas empty and dead and sticking them in this werid white limbo" which implies that all erased time goes to White Space, so its possible that the games events were simply sent there, too, hence why this level appears.