Nintendo 3DS Circle Pad Pro

The Nintendo 3DS Circle Pad Pro (the Slide Pad Expansion in Japan) is an accessory for the Nintendo 3DS that gives the system a full second circle pad and two additional digital trigger buttons (ZL and ZR) as well as a second R button, since the system's R button would be covered by the cradle. The device was released on December 11, 2011 in Japan, (coinciding with the release of Monster Hunter 3G, the first game to make use of the peripheral), January 27, 2012 in Europe, February 2, 2012 in Australia, and February 7, 2012 in North America (in all three regions coinciding with their respective release of Resident Evil: Revelations). The accessory is designed to fit around the system like a cradle, and is shaped to give it the feel of a standard console controller. The Circle Pad Pro requires one AAA battery for power, and is estimated to have a battery life of approximately 480 hours. The device also comes with slot for a wrist strap, one of which comes packaged with the device.

A Nintendo 3DS XL version of this add-on, the Nintendo 3DS XL Circle Pad Pro, was later released following the release of the system, on November 15, 2012 in Japan, March 22, 2013 in Europe, and on April 17, 2013 in North America.

As the New Nintendo 3DS and New Nintendo 3DS XL feature built-in C sticks and ZL and ZR buttons, they do not support either version of the Circle Pad Pro accessories. However, any games compatible with the Circle Pad Pro can make use of the New Nintendo 3DS buttons.

Compatible games published by Nintendo

Game	Year
Resident Evil: Revelations	2012
Kid Icarus: Uprising	2012
Steel Diver: Sub Wars	2013
Monster Hunter 4 Ultimate	2014
The Legend of Zelda: Majora's Mask 3D	2015
Code Name: S.T.E.A.M.	2015