They are recognized for using a solar sensor that is a key element of gameplay.

The first game uses a major attachment onto the game's cartridge, a solar sensor.

The third game in the series, released only in Japan, also uses the solar sensor, but it has changed its gameplay mechanics slightly.

Cover the solar sensor, and the square of sunlight disappears.

The player must use the solar sensor inside the game pack to defeat the Immortal.

The cartridge, which plugs into the device, incorporates a solar sensor; the sunlight it absorbs can help a player win the game.

Its attitude in space is maintained by using a star sensor, solar sensors, a magnetometer, gyrometers, several magnetic rods and reaction wheels.

Dexter Industries also produces three additional adapters that relate to the solar sensor.

The solar sensors and the Vectorsol experiment are located in the middle tray, being all the other equipment and experiments located inside the satellite.

The altitude could be measured by a variety of techniques, including solar sensors, horizon sensors, star sensors and a magnetometer.