The Buzz Bombers' Revenge! is the second Challenge Act of Green Hill Act 1 in the console/PC version of Sonic Generations. It is unlocked after clearing every Stage in the classic era and is playable only as Classic Sonic.
In this Challenge Act, the player, who controls Classic Sonic, must traverse an altered version of the first half of Green Hill Act 1 in under a minute. However, hordes of Buzz Bombers and Buzzer Badniks are ubiquitous, presenting the player with an extra challenge. Some of the Badniks can be used to reach and collect clocks that can remove a few seconds from the player's overall time. Upon passing the Goal Plate, the player is ranked according to his/her time. If the player manages to make it to the Goal Plate through the Challenge Act in under a minute, he/she is awarded an "S" rank.
- Despite the Challenge Act title clearly stating that Buzz Bombers play a role in the Challenge Act, Buzzer Badniks actually appear. In fact, the first Badnik Classic Sonic encounters in the Challenge Act is a Buzzer Badnik.