After Radical Train is beaten, Princess Elise jumps off of Eggman's ship and Sonic catches her. Eggman sends the Egg Genesis to capture Elise. Sonic destroys all of its arms and defeats it. To destroy it, Sonic must get onto one of its arms and attack the head or must use the bouncing bracelet when the genesis is close to the ground to reach the core on the bottom of the machine.
After beating White Acropolis, Silver fights the Egg Genesis. Silver have to throw boxes and missiles at its core to destroy it.
Team Attack AmigoEdit
The Egg Genesis is fought at the end of the downloadable Team Attack Amigo. It is the ninth stage played after one has played through Tails, Blaze, and Omega's levels. Omega is used for this boss fight where he must use his Homing Missiles to attack the Egg Genesis and the robots it sends out.
- The Egg Genesis' head bears an uncanny resemblance to those of the E-Series robots (specifically the E-100s).
- The Egg Genesis may be named after the Sega Genesis. The Sega Genesis was the console which the original Sonic the Hedgehog was on, along with Sonic the Hedgehog 2, Sonic the Hedgehog 3, Sonic & Knuckles, and multiple spin-off titles. This is further supported by the fact that Sonic The Hedgehog 2006 was made to celebrate Sonic's 15th anniversary.
- However, the Egg Genesis is not called the Egg Mega-Drive, the Sega Genesis' name in other regions, elsewhere.
- When fighting the Egg Genesis as Sonic, he can hit him on the weak spot he has when fighting him as Silver (under the middle). Sonic will still fly upwards after doing so like when you hit him on top of the head.