Sorry Nintendo fans – your game system is seriously lacking in environmental friendliness. In fact, it's the first brand to score a zero across the board.

Greenpeace just released the sixth edition of its "Guide to Greener Electronics" for December 2007. With Nintendo at the bottom, Sony Ericsson, Samsung and Sony top the list of greenest electronics and most improvements.

The guide is updated every three months, which encourages manufacturers to make quick changes. Plus, the guide is a useful and up-to-date resource for consumers – especially around the holiday season.

Greenpeace does not rank the electronics companies on energy use, which is a large issue that could withstand improvement. Instead, it focuses on the lifecycle of the products – how the companies clean up their products by eliminating hazardous substances, and how they take back and recycle their products once they've become obsolete. Because lets face it – not everyone wants to play old-school Mario Brothers forever.