Techno is a fairly complex 2D platformer in which the brother of the protagonist named Techno falls into a very eerie and gloomy place with robots and various kinds of mechanisms roaming in it. The protagonist, named Robo, goes down there to get the Techno out, but when he is there he does not find him. Then he realized that his brother had already been taken away and locked in a cage, to open which you need to activate 30 consoles located on different floors of this lost and gray place. This had happened to some robots before, so Robo knew what to do.
Link to the game: https://iko-games.itch.io/techno