Glass, believe it or not, is a flight simulator but one designed for a very special task which is to train you for a specific task. With the aid of Glass you must acquire the skills needed to be a starfighter pilot. The problem, you see, is that the planet Hygon has been taken over by a bunch of clever but nasty aliens. They have built three citadels which act as bases for further military expansion. The citadels are heavily defended and only good pilots stand a chance of destroying any one of them let alone all three.
The simulator has been designed to test your abilities to the limit as you must destroy hundreds of droids before you even catch sight of a city. For most of the time the action takes place on the planes of Hygon which is a pretty boring sort of place to be, mostly because the surface is reflective, flat and devoid of just about anything except, of course, the droids. You are going to meet three main types of droid, the first are sproingy bouncy ones, you know the sort, they never seem to sit still long enough for you to kill them, but you must if you are to avoid being killed yourself. The second class of droid appears to be patrolling a boundary, in herds. They march, relentlessly, from one side of your view-screen to the other happily lobbing tennis balls at you, only these balls do nasty things to shields. The last breed of droid is bigger but less bold, they cower over the horizon and then pop up and fire at you.
The simulator has two other hazards for you to cope with. Firstly you are given practice shooting up enemy ships as they sidle past your viewscreen. Secondly, you experience the thrill of flying across the less boring parts of Hygon at low level and at high speed. The simulation gives the appearance of travelling, on a high speed Fly-mo across a very large graveyard complete with highly coloured grave stones. When you collide with one of the 'headstones' your shield suffers damage. Many alien deaths later you reach the first citadel and a nuclear warhead is launched against it automatically, letting you sit back, relax and watch the spectacular end of one of the cities. But not for long, one down two more to go.
You're equipped with twin rapid fire lazers, centred on the screen so aiming is done by moving the craft from side to side. Points are awarded for hitting enemy targets and the first 20,000 are hard work, after which the bonuses are generous and top scores can well go into the millions. A score such as that would earn you the highest title of 'Game Lord' but more often than not early missions will attribut