Consumer demand convinced Nintendo to produce a slimmer handheld with larger screens than the DS Lite. Development of the DSi began in late 2006, and the handheld was unveiled during an October 2008 Nintendo conference in Tokyo.
The fourth iteration, entitled Nintendo DSi XL, is a larger model that launched in Japan on November 21, 2009, and worldwide beginning in March 2010. It is the third iteration of the Nintendo DS, and its primary market rival was Sony's PlayStation Portable (PSP). The console launched in Japan on November 1, 2008, and worldwide beginning in April 2009. The Nintendo DSi is a dual-screen handheld game console released by Nintendo. Secure Digital High Capacity card (SDHC card) Nintendo DSi Shop ( digital distribution)
