A man who has been playing the computer game Civilisation II for ten years describes the year 3991 AD as a hellish nightmare of suffering and devastation.

Daniel Knowles, from the Telegraph and a fan of the game, says the game has certain assumptions built in to it about what will happen if there is a nuclear war or if you stop producing green technology.

"It's a kind of sociological simulator... a giant economical model" he told the Today programme.

He believes gamer James Moore "would not still be playing it if he had reached an Utopia".

Dr Jo Twist, of the Association for UK Interactive Entertainment, says each game is different "depending on the decisions you make".

"No one person will have the same experience", she told Justin Webb, "you play through these scenarios, and play is the important word here".

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