Tails' Nightmare 2 is the sequel to the Sonic the Hedgehog fangame Tails' Nightmare released for browsers on 16th November 2010. Like its predecessor, the game is loosely based off the Tails Doll creepypasta. They contains improvements, Wall jumping and rail grinding are two new features added, and the gameplay itself is much smoother than the last and a variety of difficulty setting options.