Death Egg Robot (Sonic Generations)

The Death Egg is a boss stage in Sonic Generations. It is this stage where Classic Sonic dukes it out with the Death Egg Robot, thus making the stage a nod to Sonic the Hedgehog 2.

Gameplay
The battle is split into two phases; the first phase requires Sonic to get behind the robot to hit its unarmored posterior as they ride up an elevator, while the second phase has Sonic trick the robot into punching a platform as a time bomb explodes, temporarily immobilizing the arm long enough for Sonic to run up the arm and attack the robot's head.

Hard mode
On Hard mode, the Death Egg Robot is much faster at shooting his arms at Sonic and must be hit four times whilst on the elevator as opposed to two. In the second phase, there are fewer bombs and all the switches are placed on platforms above the bombs, making it harder to get close to them without setting them off.

Trivia

 * This is the first boss fight for Sonic Generations to appear in any trailer, but not the first to be announced officially. This honor goes to Big Arm, a boss on the 3DS version of Generations.
 * What aspect of Dr. Eggman that's piloting the machine is hidden from the player, even when he's "kidnapped" by the Time Eater. It's later revealed that Modern Dr. Eggman allied with his past self.
 * This is the only boss in the game that was originally fought by Sonic in his normal form, as Perfect Chaos was fought by Super Sonic and Egg Dragoon was fought by the Werehog.

Music
thumb|left|300px|Death Egg Robot Battle, it is a remix of the original battle theme thumb|right|291px

Videos
thumb|300px|left|Death Egg Robot boss - Hard Mode