At first I thought it was a deliberate plot to confuse me. It said quite clearly to use the Z and X keys to move left and right on the cassette inlay. But it would not work.
It was only when I checked the instructions on the game itself that I discovered it was the Q and W keys. A black mark. Having said that, Roboto is quite an entertaining little game.
The idea is to guide Roboto, a laser-armed robot, through 51 rooms of a power station, destroying power orbs and solving puzzles and tricks.
Good fun for an hour or two.