DSi LL/XL:

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A larger model with bigger screens called the Nintendo DSi LL in Japan and Nintendo DSi XL in North America and Europe was announced on October 29, 2009. This model is the fourth version of the Nintendo DS handheld gaming console and the first "size variation" of its product family. Satoru Iwata mentioned portable game consoles have focused on portability and single-player aspects due to cost restraints, which limited screen size. The Nintendo DSi XL features larger screens to improve visibility for other persons viewing it at an angle to let them be more involved. Nintendo stated the unit offers "an improved view angle on the screens" making it the first "portable system that can be enjoyed with people surrounding the gamer." Iwata argued this introduces a new method of playing portable video games where those "surrounding the game player can also join in one way or the other to the gameplay." GameSpot thought the larger screens will appeal more for the elderly or those with poor eyesight.

As opposed to Nintendo's concept for the original DSi, Iwata suggest buyers finding a "steady place on a table in the living room" for the DSi XL to be shared by multiple members of a household. The DSi XL is the heaviest portable in its product family weighing 314 grams and is the tallest and broadest being 91.4 mm tall × 161 mm broad × 21.2 mm wide. It features two 4.2-inch screens and has improved battery life over the DSi on all brightness levels; such as 13–17 hours on the lowest brightness setting. It is bundled with two longer styli, one of which is a thicker rounded pen-like stylus.

The console launched in Japan on November 21, 2009, in dark brown, wine red, and natural white. The unit will be released in North America and Europe during the first quarter of 2010. It is sold at a higher price than the original DSi in Japan and is expected to be sold at a higher price in Europe. In Japan, it is bundled with pre-installed software; the DSi Browser, a dictionary program, and three DSiWare titles. The console totaled 103,524 units sold after its first two days on shelves in Japan compared to 170,770 DSi units in the same timeframe.