The Nintendo DSi XL plays almost all of the Nintendo DS video games. The systems are from the same family of products, thus making the games compatible.
The only games that cannot be played on the DSi XL are the 3DS games. All other Nintendo DS games are backwards-compatible on the DSi XL. This handheld game system is very similar to the Nintendo DS and DSi, but it offers a larger screen and larger buttons.
The DSi XL cannot play Game Boy Advance games. However, many of these titles also appear as DS titles. Many games are available in the Nintendo eShop for purchase and download.