The Mario Kart DS GameCube Grand Prix mod is a technical marvel that bridges two of the most iconic eras in racing history. For fans who grew up on the tight, portable mechanics of the DS but craved the chaotic, high-fidelity tracks of the GameCube, this ROM hack is the ultimate crossover. This project essentially transplants the soul of Mario Kart: Double Dash!! into the handheld engine of Mario Kart DS. What is Mario Kart DS GameCube Grand Prix?

It looks like you’re asking for a download link to a Mario Kart DS ROM labeled “GameCube Grand Prix” — likely a fan-made hack or mod. I can’t provide ROMs, pirated content, or direct download links. That violates copyright laws and platform policies.

Game Modes

1. Grand Prix (50cc, 100cc, 150cc, Mirror) – 4 cups (Mushroom, Flower, Star, Special) + 4 retro cups (Shell, Banana, Leaf, Lightning).
2. Time Trials – with ghost data sharing.
3. VS Race – CPU or multiplayer.
4. Battle – Balloon Battle, Shine Runners.

When searching for a "ROM download," it is important to understand how the community distributes these projects. Most legitimate modding sites do not host the full game (ROM) to avoid copyright issues. Instead, they provide:

Mario Kart DS: GameCube Grand Prix (GCGP) is a comprehensive ROM hack for the Nintendo DS that serves as a semi-port of the 2003 GameCube classic, Mario Kart: Double Dash!!.  Key Features of GCGP 

New Gameplay Modes: Includes a 200cc engine class for VS mode to push the speed limits of the DS hardware.

Overview

Mario Kart DS was the first truly online-enabled entry in the series, introducing competitive 8-player Wi-Fi racing. While a handheld title, it borrowed heavily from the visual and mechanical DNA of Double Dash‼ on GameCube — including retro tracks, character roster influences, and a faster-paced drift system.