The Egg Network, or Eggnet, is a global communications network used by the Eggman Empire to keep in touch with its various territories across Mobius.
Pre-Super Genesis Wave
The day after the destruction of the third Metal Sonic and Metal Scourge, Snively Robotnik used the Egg Network to perform a routine maintenance check on the Sub-Bosses. While doing so, he encountered a particular one named Regina who he became romantically attached to.
During the Chaotix (Vector, Espio, and Charmy) and the Mercian Freedom Fighters (Bow Sparrow, Thorn the Lop, Munch Rat, Alan Quail, and Friar Buck) invasion into the Snottingham Castle in Mercia, Espio had hacked the Eggnet to find where the Chaotix's friends, Mighty the Armadillo and Ray the Flying Squirrel, and found out that Mighty's sister is located at Sand Blast City.