If you own a 3DS (or a 2DS), this is the superior way to play. While the New Nintendo 3DS Edition is no longer receiving updates and is missing features found in the modern Bedrock edition (like infinite worlds and The End dimension), it is a fully realized game compared to the DS homebrew experiments.
: Offers survival mode with a working inventory, auto-spawning mobs (zombies, pigs, sheep), a day-night cycle, and even local DS-to-DS multiplayer. How to Play These ROMs nintendo ds minecraft rom