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How to get your D3X to play space invaders: | duckrabbit - we produce beautifully crafted multimedia](http://duckrabbit.info/blog/2009/08/how-to-get-your-d3x-to-play-space-invaders/):

It’s quite ridiculous really, but hidden away deep in the bowels of the Nikon firmware is none other than a version of the arcade classic Space Invaders