Nothing Ever Remains Obscure, or N.E.R.O. for short, is an graphic adventure/puzzle game which takes place through the eyes of the protagonist, a young boy clad in a blue cloak, through several colorful scenery's, with an almost silent narrative. The silence is only broken by the narrator after a puzzle is solved correctly and provides some continuing background information. The only few hints about the "possible" story of the game and it's history of the boy protagonist are strewn across the scenery as floating texts. Early on in the game a second figure, clad in a red/black cloak (presumably the father of the boy clad in blue), can be controlled to solve the more difficult puzzles later in the game.
No real enemies are involved in the game and the only means of attacking/solving puzzles is a light orb ("the Sphere of Light") which can be shot from the protagonists arm and a combination of protagonist/red cloaked second figure configurations. Several collectibles, picture fragments, can be picked up to clarify the background story.