A notable leaker has revealed a title known as Sonic Rumble, a multiplayer battle royale Sonic the Hedgehog spin-off for mobile devices. Sonic Rumble was first leaked by MbKKssTBhz5, or Midori, who has had an accurate track record throughout 2023 and 2024 regarding many unannounced Sega-produced titles. The upcoming Sonic Rumble is one of those games she had leaked previously, including what was the game's working title.