This Generations mod brings back a Sonic Unleashed feature that allowed rings to increase Sonic's speed. This feature was missing in Generations most probably cause its levels weren't designed mostly for speed due to having more emphasis on platforming, but now this mod restores that which means collecting lots of rings has a greater purpose again.

Rings Customization GUI feature:

• Implementation of UI from Skyth's Parameter Editor mod to allow modification to this mod.
• Rings can either only increase the boost speed or base speed. Options are togglable via the UI.
• Can choose which base speed between Unleashed & Generations to use.
• Can modify the amount of rings per increase.
• Can modify the increase rate of either the boost speed or base speed.
• You can press "ESC" key to toggle the UI feature on in order to bring up the UI menu to make changes, and to press the ESC key again to toggle the menu off your screen.