Features:

The DSi's Two Digital Cameras:
The most noticeable feature of the slim Nintendo DSi system are its two cameras - one camera is situated on the external body pointing away from the user, and the second one points at the user when the device is flipped open. As the first truly interactive digital camera in a video game system, the DSi Cameras feature 10 different interactive "lenses" that can manipulate your photos, offering an easy way to take and share your photos with family and friends. The cameras also present people with unprecedented ways to interact with their games, and in the process provide developers with a new tool to devise creative games and experiences. If the touch screen gave Nintendo DS a sense of feel and the microphone allowed it to hear, the two cameras give Nintendo DSi the sense of sight.

DSi Sound:
Another enhanced feature is the Nintendo DSi Sound application, which serves as both an interactive voice recorder and music player that allows users to play with their music while they listen to it. Users can access different audio filters or control the pitch and speed of recorded voice or music files to alter voices or change the tempo of a song. The mic is located between the two screens when the device is flipped open, and there is also a stereo headphone output that lets users listen to music saved on an SD card, even with the screen shut.

The DSiWare:
In the world of software, Nintendo DSi will be the platform for the most relevant and fun on-the-go games and applications. The Nintendo DSiWare application will populate Nintendo DSi with software that can be downloaded using Nintendo DSi Points directly to the portable system, just as WiiWare has with Nintendo's Wii console. Developers big and small are invited to create software that makes use of the properties and functions of the hardware. Nintendo DSiWare games and applications will be available at a range of values, starting at 200 points.

Games and Backwards Compatibility:
In addition to downloadable games, Nintendo DSi is able to play games made specifically for the system and sold at retail. The system can also play most Nintendo DS games, and will have access to a library of more than 850 titles originally made for that system. As an example of the quality of games that DSi players can expect to see both from both Nintendo and third-party game developers, at the launch of the DSi Nintendo also released Rhythm Heaven. A wildly popular rhythm game in Japan, where it has sold nearly 2 million copies since its release in mid 2008, Rhythm Heaven features catchy tunes, charming characters, and a wide variety of rhythm games as it makes maximum use of the DSi's functionality.

Pre-Installed Titles from the Mario Collection:
Enjoy titles like - Mario vs. Donkey Kong: Minis March Again!, WarioWare: Snapped!, Dr. Mario Express, Mario Calculator, Mario Clock From games to applications, your Nintendo DSi comes packed with Mario-themed fun. Challenge yourself with the puzzles in Mario Vs. Donkey Kong: Minis March Again, put yourself in the weird world of WarioWare: Snapped!, or play a few rounds of Dr. Mario Express. You can also do quick calculations with the Mario Calculator or nab coins while you keep time with the Mario Clock. The Mario Collection turns your Nintendo DSi system into a Mario machine!

Facebook:
Nintendo DSi owners have even more ways to share their experiences with friends and family. Using an Internet-connected Nintendo DSi system and the Nintendo DSi Camera application, Facebook members can take pictures with either of the system's two cameras and upload their photos directly to their Facebook profile. While reviewing pictures they've stored in the Nintendo DSi Camera album, which includes photos taken by users and manipulated using the built-in interactive lenses, users can simply tap the Facebook icon on the system's touch screen to instantly transmit photos to the user's Facebook profile. The user's system must be configured to a wireless broadband Internet connection for the transmission of photos.