Nintendo has blamed piracy devices like the R4 for a massive drop in DS game sales.

In June 2009, Nintendo monitored ten overseas websites allowing visitors to illicitly download DS software. 238 million downloads took place, equating to one trillion yen (£7 billion) in lost sales, Asahi reports.

European DS software sales fell 45 per cent between April and December 2009. During the same period, US and Japanese sales declined by eleven per cent and seven per cent respectively.

Game copying devices like the R4 circumvent console anti-piracy systems, allowing users to play software illegally downloaded from the internet.

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