Recently Famitsu revealed what we know now as the 3DS Slide Pad in their article about Monster Hunter. Today Nintendo officially announced the peripheral. It will retail for 1,500 Yen – about 20 US dollars and Capcom will be bundling it with Monster Hunter 3G in Japan.
The Slide Pad requires a single AAA battery to run.
Some other games that will support the 3DS Slide Pad will be Resident Evil Revelations, Metal Gear Solid Snake Eater 3D, Ace Combat 3D Cross Rumble, Dynasty Warriors VS and Kingdom Hearts 3D.
Along with the official announcement of the Slide Pad, in November the 3DS will be getting a firmware update that will allow it to record video with the option of recording in 3D. There will also be some goodies for 3DS owners who conquered the StreetPass challenges.