Sega unveiled a teaser trailer, featuring Sonic running through a forest, at the end of a 30th anniversary livestream on May 27, 2021.[14] The title was not announced then, but the trailer's metadata and a Sega press release were discovered to have titled the game Sonic Rangers.[15][16] Iizuka later said that he felt the game was teased prematurely, but believed it was necessary given that it was the 30th anniversary and Sonic Team had not announced a game since Forces' release.[17]