Must a title on the Nintendo 3DS use the system's 3D effects? Not necessarily. That's the latest word from Nintendo global president Satoru Iwata, who suggests not all software must take advantage of a system's unique attributes. In fact the Nintendo executive went on to suggest Nintendo's own 3DS titles might not always be in 3D.

"I think there could be a Nintendo 3DS software title which does not use the 3D feature at all, and I believe Nintendo will develop such software," Iwata said. "Instead, other features of the Nintendo 3DS should be focused on. It might be a communication feature, or other functions (such as the gyro sensor or the motion sensor). The important thing is that each respective software title has its own characteristics, and appeals to the consumers in a way that fits the software."

Iwata's statement about 3D came in the context of a larger discussion about systems and their unique features. Iwata had pointed out that Wii was often seen as a waggle system until developers began focusing on other features. In that same way, Iwata believes that his customers will not be satisfied if all 3DS games focus all of their innovation and gameplay on the 3D experience.

"I believe we have to implement new proposals focused on another appealing feature of the Nintendo 3DS, which is the communication feature," Iwata said. The Nintendo executive did note that the company's two major portable titles for the fall, Mario Kart 7 and Super Mario 3DLand, do focus on 3D.
Source- ign

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I suppose non-3d games will be cheaper