I understand you're looking for content related to an "Undertale DS ROM" — but I need to pause here.
For the end-user, downloading a homebrew file (.nds) without owning the original game constitutes piracy. Furthermore, because Undertale is readily available on the Nintendo Switch (which supports handheld mode), the functional necessity of a DS port is diminished, pushing the project strictly into the realm of technical novelty and preservation challenges.
Playing Undertale on the Nintendo DS Go to product viewer dialog for this item. undertale ds rom better download
If you specifically want to play Undertale on a DS-form-factor device, buy a or Anbernic RG series handheld and run the Android version of Undertale. That’s the closest legal experience.
C3RV1/UndertaleNDS: Undertale port for Nintendo ... - GitHub I understand you're looking for content related to
: Users on RetroAchievements recommend using emulators like NooDS or DeSmuMe for the best performance, as some other emulators encounter errors with this specific homebrew.
The most reliable "ROM" currently available is the port by developer C3RV1 . Because it is a fan-made project, it cannot legally distribute the game's original assets. Instead, it uses a "patching" system to ensure players own a legitimate copy. Source: Available on the UndertaleNDS GitHub Repository . Key Features: Optimized for the DS's dual-screen resolution. Compatible with R4 flashcarts and popular emulators. Includes original dialogue and core movement mechanics. How to "Download" and Install Microsoft Windows (2015) OS X / Linux (2015)
: Search for the official repository of the Undertale DS homebrew project. This ensures you have the latest bug fixes and combat engine updates.