While Inazuma Eleven 3 was officially released in English for the Nintendo 3DS, there is no official English version for the Nintendo DS; it was only released in Japan for that platform. To play it in English on the DS, you must use a fan-made English translation patch applied to a Japanese ROM. Guide to Playing Inazuma Eleven 3 in English on NDS
Since distributing pre-patched ROMs can be legally grey, the most reliable method is to patch a clean Japanese ROM yourself.
: The resulting patched ROM will run on DS emulators (like DeSmuME or MelonDS) or original hardware using a flashcard. Version Differences
The "definitive" third version featuring the movie-inspired plotline with Canon Evans and the villainous Team Ogre. Where to Download & How to Patch