Any file claiming to be an Undertale DS ROM is either:
: For the best experience, developers recommend using MelonDS if playing via an emulator, as it yields the highest quality audio and performance. undertale ds rom download upd
The DS vibrated violently in his hands. A low, distorted hum began to rise in volume. On the top screen, a sprite appeared. It wasn't Gaster or any known secret; it was a crude, hand-drawn sketch of a door. Any file claiming to be an Undertale DS