QIX is one of the oldest arcade games I know of – and while it is rather fun – the stories that people tried to develop around it were bizarre to say the least. The basis of QIX is that you control this little diamond and attempt to ‘box in’ a quick moving set of lines, while avoiding being touched by the lines or sparking objects. But as you can see from the first screenshot here:
The arcade version tried to craft some weird ‘alien invasion’ story around this game that I could never understand. None the less – this is a really fun and addictive old classic. QIX runs acceptably under Virtual PC (a little slow here and there – but very playable).