Simon (game) also released in the US, with an aesthetic recalling that of the 1970s and 1980s models. Recently, Hasbro has released Simon Optix, a headset game with a motion sensor technology similar to Simon Air. The device has four colored buttons, each producing a particular tone when it is pressed or activated by the device. A round in the game consists of the device lighting up one or more buttons in a random order, after which the player must reproduce that order by pressing the buttons. As the game progresses, the number of buttons to be pressed increases. (This is only
Fuel saving device difference in economy or power in tests on ten separate vehicles, finding that the device did nothing but light up. "Car and Driver" magazine found that the device contains nothing but "a simple circuit board for the LED lights", and disassembly and circuit analysis reached the same conclusion. The maker disputed claims that the device has no effect, and proposed changes to the "Consumer Reports" testing procedure, which when implemented made no difference to the results. Another device described as 'electronic' is the 'Electronic Engine Ionizer Fuel Saver'. Testing of this device resulted in a loss of power and an