Earlier this month we learned that Super Smash Bros. for Nintendo 3DS will not support the Circle Pad Pro. This was a little disappointing for some fans, as New Nintendo 3DS can simulate the GameCube C-stick with its second, smaller slider pad, but regular 3DS users won’t be able to do the same, giving them a disadvantage in battles. As it turns out, this was unfortunately due to an unavoidable hardware issue.
Speaking with popular Japanese gaming publication Famitsu Magazine, Super Smash Bros. creator Masahiro Sakurai explained that the Circle Pad Pro requires more power than you’d think, and Smash is already taking up every last bit of juice that 3DS has to offer.
Supporting the CCP requires the use of some of the CPU’s processing load. From the information received during the development of Kid Icarus: Uprising, this is a quite large load at around 5%. Kid Icarus: Uprising and Smash both use the maximum capability of the device, so we had to abandon the idea of CCP support. With the New 3DS, we were able to support the C-Stick as the processing power is increased and it is not a peripheral device.
— Masahiro Sakurai
This isn’t the first time that processing power has been brought up in regards to Super Smash Bros. for Nintendo 3DS. Hardware limitations were also the reason Ice Climbers were cut from the game.