Invincibility Challenge

The Invincibility Challenge is a Challeneg Act that appears in the console/PC versions of Sonic Generations.

Description
The player takes control of Classic Sonic in the Chemical Plant, where they are provided with no rings at all. Many large stretches of the stage and platforms are also covered in spikes and enemies, making it impossible to traverse alone. As such, the player has to utilize the several constantly-regenerating monitors that offer invincibility power ups to the player in order to make it to the goal.