The Web: Webcrash by Stephen Baxter
2028. Aliens arrive - the first of a brand new series of adventures in the Web. 1 year after her adventure in GULLIVERZONE, Metaphor is still as excited by the web as anyone else her age. But even she isn't ready for the chaos and excitement that comes when the whole system crashes... No one knows what caused it; few people know how tosolve it. But everyone knows what a nightmare it is. Different sites are melting together, and when that means Vikings and spaceships are meeting, the last thing you want is to be stuck in the middle. But that is exactly where Metaphor is. And soon, sheis involved in a fight for survival with a group of Vikings who are displaying knowledge that no phace should have. Little does Metaphor know that the web crash is only the 1st part of an adventure that is going to overtake the world. And not just the world of the web but the Real world too.