It is an open-source Nintendo DS emulator capable of running both demos and commercial games. You can use a variety of emulators for this purpose, but DeSmuME is the most popular. However, Nintendo DS games continue to be plentiful, and many people still want to play them. Regrettably, the console is no longer available for purchase. The Nintendo DS was once the pinnacle of portable gaming, with a plethora of excellent titles.