According to a new rumor, a Sonic the Hedgehog mobile game focused on raising Chao is currently in development. The Sonic the Hedgehog franchise originally introduced the Chao in Sonic Adventure as part of a side activity known as the Chao Garden. The Chao Garden allowed players to raise the Chao as virtual pets, with these creatures growing and evolving to be able to compete in activities such as racing and karate matches. Chao Garden was incredibly popular, returning in Sonic Adventure 2 and the Sonic Advance series. Now notable Sega leaker has stated the franchise could be revisiting the Chao Garden in a brand-new game.