For those using a Nintendo 3DS, the is a popular homebrew application that mimics the original eShop interface but offers free downloads for a library of games, including DS titles.

If you use these methods, you gain access to what many consider the best handheld library in history. Is This Thing Any Good? | 500 in 1 DS Cart

Getting Nintendo DS games for "free" generally involves utilizing hardware like (e.g., R4 cards) or modding existing hardware to run software like the Ghost eShop . While official methods for downloading games on the original DS hardware are largely defunct, these community-driven methods allow users to access nearly the entire DS library on original hardware or modern emulation handhelds. The "Free" Method: R4 Flashcarts