Base off the Sonic the Hedgehog games.

When Discord breaks free from his stone prison, he decide to have his fun again. This time he chose Rainbow Dash as his target and takes away Rainbow's wings! Rainbow now as to travel through Equestria on hoof to find and beat Discord to get her wings back! But how can Rainbow catch Discord if she does have her wings? By running of course! What? You think Rainbow too slow with out her wings? Well, You win some and you lose some right? Rainbow may lost her wings, but she got something better in return. Read to find out.

Ok, having trouble planning how the Everfree Forest is going to look when Discord change it and plan on going back to Ponyville Zone and make it a bit better.

Rainbow Dash as Sonic
Discord as Dr. Ivo "Eggman" Robotnik

Cover belongs to nickyv917.