The dual-layer DVD used in the production of Nintendo's Super Smash Bros. Brawl (Wii) may cause the game to be unreadable in "a very small percentage of Wii consoles," Nintendo has revealed.

Released yesterday in North America, the highly-anticipated mascot brawler has a roster filled with characters from the company's past efforts, along with Metal Gear protagonist Solid Snake and iconic blue speedster Sonic the Hedgehog.

According to Nintendo, some Wii consoles may have difficulty reading the game disc due to "contamination on the lens of the disc drive," the remedy of which mandates a visit to the nearest repair center.

To resolve any potential problems, the company has created a dedicated support page for those afflicted in North America. There will be no charge for the repair or shipping of the console itself, and the company notes that it is upgrading its inbound and outbound shipping "to expedite the total repair process."