Nazo Waku Yakata makes use of 3DS graphics and sound.
http://www.nintendoworldreport.com/news/25806
Capcom announced a new 3DS title, called Nazo Waku Yakata, which is a "sound adventure" game that doesn't use buttons, according to Famitsu.
It takes place in a mansion that players must explore using the touch screen, gyroscope, and microphone. The goal is to progress through each room, which could take anywhere from three to eight minutes to complete.
Optophonics technology, which allows players to experience 3D sound even with cheap headphones, will be used in the game. The game's creator, Minoru Nakai, recommends that players wear headphones when playing the game to get the full effect.
The article in Famitsu gave some examples of rooms, including one where you have to massage a girl, and another where you have to hold the system still to not set off fireworks.
According to Capcom, the game is about 60 percent complete. It is expected to be released this summer.