Guardian writes: "In 2005 it was widely assumed, by anyone not actually employed by Nintendo, that the Sony PSP would win the battle of the handheld games consoles. The PSP was sleek with a gorgeous widescreen display. The Nintendo DS looked like a toy. Even the inclusion of two screens wasn't enough to get anyone excited. But while the PSP has done well enough – it has sold more than 50m units – Nintendo's ugly duckling has grown into a phenomenon. The console has now shifted more than 100m units. The trend was recently confirmed when the DS overtook the PlayStation 2 to become the biggest selling games console in UK history."