High Speed Challenge

"Collect Power Sneakers to reach the goal before time runs out."

- Description, Sonic Generations

High Speed Challenge is the fifth and final Challenge Act in Green Hill Act 1 from Sonic Generations. Due to the Challenge Act being in Act 1 of Green Hill, only Classic Sonic is playable.

Description
In this Challenge Act, the player, who controls Classic Sonic, must run through a slightly-altered former half of Green Hill Act 1. The player must collect Power Sneakers to run faster through the Challenge Act, as they have a certain time to get an "S" rank. Badniks, such as Moto Bug, Buzz Bomber, Buzzer, and Crabmeat, appear in the Challenge Act to make things difficult for the player. However, if the player can make it to the Goal Plate within a minute and ten seconds or shorter, the player will receive an "S" rank.