Greenpeace issued its sixth "Guide to Greener Electronics" which ranks electronics companies on a scale from 0 to 10, according to their environmental record. The bottom company of the 18 electronics makers was Japanese gaming leader Nintendo.

Wii's maker managed to snatch... 0 points. Greenpeace blasted Nintendo for its failure to offer a recycling program for its old video game consoles or disclose any information about chemicals used to make its new hot-selling machine, the successful Wii.

Greenpeace also accused Nintendo of simply not providing a policy or information on environmental issues, although the company replied immediately that it was "very concerned with doing our part to help preserve the environment," adding that "We're always researching new products and procedures to make our products and operations as environmental-friendly as possible."

Another gaming console maker, Microsoft, ranked among the worst companies eco-wise. The Redmond company also had poor results, with only 2.7 points, while the other of the gaming big three, Sony, earned a significantly better 7.3 points on Greenpeace’s list.

Apple, Panasonic, Samsung, Sharp, Sony, and Toshiba have all said that they will produce consumer electronics without vinyl plastic (PVC) and brominated flame retardants (BFRs), but all seem slow to actually implement these promises across their entire line of products. As a result, Greenpeace criticized the slow pace by which things are changing over at these electronics power players:

"While it's encouraging to see Sharp and Microsoft providing timelines for the complete elimination of vinyl plastic and all BFRs across their entire product range, makers of TVs and computer games have a long way to go," Iza Kruszewska, toxics campaigner at Greenpeace International, said in a statement.

The top company was Sony Ericsson, the "new leader due to improved takeback reporting, new models PVC free, but falls down on takeback practice," Greenpeace wrote after awarding the company 7.7 points. Samsung came in second, with Sony, Dell and Lenovo coming in third with 7.3 points each. Bottom companies are, above Nintendo, Philips with 2 points and Microsoft, with 2.7, for "long timeline for toxic chemicals elimination (2011) and poor takeback policy and practice."

You can check the list with additional details on Greenpeace's website.