On Midsummer Night, dreams are especially powerful. So powerful, in fact, that they can cause the walls between realities to come crashing down. And some things you really don't want to break through.

According to The Nice and Accurate Prophecies of Agnes Nutter, Witch (the world's only completely accurate book of prophecies, written in 1655, before she exploded), the world will end on a Saturday. Next Saturday, in fact. Just before dinner. So, the armies of Good and Evil are amassing, Atlantis is rising, frogs are falling, tempers are flaring. Everything appears to be going according to Divine Plan.

Somewhere on the frontier between thought and reality exists the Discworld, a parallel time and place which might sound and smell very much like our own, but which looks completely different. Collected together for the first time are seven full-cast BBC Radio dramatisations of Terry Pratchett’s novels, with star-studded casts including Martin Jarvis, Sheila Hancock, Anton Lesser, Philip Jackson, Alex Jennings and Mark Heap.

When The Sandman, also known as Lord Morpheus - the immortal king of dreams, stories and the imagination - is pulled from his realm and imprisoned on Earth by a nefarious cult, he languishes for decades before finally escaping. Once free, he must retrieve the three “tools” that will restore his power and help him to rebuild his dominion, which has deteriorated in his absence.

Somewhere on the frontier between thought and reality exists the Discworld, a parallel time and place that might sound and smell very much like our own, but that looks completely different. It plays by different rules. Certainly it refuses to succumb to the quaint notion that universes are ruled by pure logic and the harmony of numbers. But just because the Disc is different doesn't mean that some things don't stay the same.

In the 'fantasy' universe of the phenomenally bestselling Discworld series, everything runs on magic and common sense. The world is flat and million-to-one chances happen nine times out of ten. Our world seems different - it runs on rules, often rather strange ones. Science is our way of finding out what those rules are. The appeal of Discworld is that it mostly makes sense, in a way that particle physics does not.

Finding himself alone on a desert island when everything and everyone he knows and loved has been washed away in a huge storm, Mau is the last surviving member of his nation. He's also completely alone - or so he thinks until he finds the ghost girl. She has no toes, wears strange lacy trousers like the grandfather bird and gives him a stick which can make fire. Daphne, sole survivor of the wreck of the Sweet Judy, almost immediately regrets trying to shoot the native boy.

Dodger is a tosher – a sewer scavenger living in the squalor of Dickensian London. Everyone who is nobody knows Dodger. Anyone who is anybody doesn’t.But when he rescues a young girl from a beating, suddenly everybody wants to know him.And Dodger’s tale of skulduggery, dark plans and even darker deeds begins.

One Thursday lunchtime the Earth gets unexpectedly demolished to make way for a new hyperspace bypass. For Arthur Dent, who has only just had his house demolished that morning, this seems already to be more than he can cope with.

Here is a stunning collection of short stories by the acclaimed fantasy writer. The distinctive genius of Neil Gaiman has been championed by writers as diverse as Norman Mailer and Stephen King. These stories will dazzle your senses, haunt your imagination, and move you to the very depths of your soul. This extraordinary compilation reveals one of the world's most gifted storytellers at the height of his powers.

In the beginning, there was nothing but endless flatness. Then came the Carpet.... That's the old story everyone knows and loves (even if they don't really believe it). But now the Carpet is home to many different tribes and peoples, and there's a new story in the making: the story of Fray, sweeping a trail of destruction across the Carpet. The story of power-hungry mouls - and of two Munrung brothers, who set out on an adventure to end all adventures when their village is flattened.

The battle has been fought and won, and all have been transformed by the struggle. Imago of Lockwood has become Lord Mayor of the City Imperishable, though at a price beyond his wildest imagination. Bijaz the Dwarf has been imbued with a godlike power and a responsibility he scarcely understands. And Jason the Factor, resurrected from death at the hands of his sister, the Tokhari sandwalker Kalliope, has become the sula ma-jieni na-dia, the fabled Dead Man of Winter.

As the mighty alien fleet from the very latest computer game thunders across the computer screen, Johnny prepares to blow them into the usual million pieces. And they send him a message: We surrender. They're not supposed to do that! They're supposed to die. And computer joysticks don't have 'Don't Fire' buttons. But it's only a game... isn't it?

When Madeleine Maxwell is recruited by the St Mary's Institute of Historical Research, she discovers the historians there don't just study the past - they revisit it. But one wrong move and History will fight back - to the death. And she soon discovers it's not just History she's fighting....

Two teenagers come together in a future where staying alive is the only ambition. Here in a vast lost valley, society has split into two: the Wanderers, who team together to battle against the elements and each other in the harsh world of the desert, and those who live in the pyramid-city of Arcone, whose closed environment and tightly controlled society enable them to maintain a more civilized existence in the face of an environmentally devastated planet. Conflict is inevitable....