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How to Create Nintendo DS Video Games

Developing for Nintendo DS requires a toolchain targeting the ARM9/ARM7 dual-core architecture, dual screens, touch input, and limited RAM (4MB). Here's the modern homebrew path (official SDK requires Nintendo license).

1. Setup Development Environment

OS: Linux (best), macOS, or Windows (WSL2).

Toolchain: devkitPro (devkitARM) – installs GCC, libc, libnds, tools.

pacman -S devkitARM libnds dstools # Arch # or run devkitPro installer (Win/macOS/Linux)

IDE: VS Code + C/C++ extension, or CLion, or plain Makefiles.

2. Learn the Hardware

Component	Spec
CPU	ARM946E-S (main, 67 MHz) + ARM7TDMI (sub, 33 MHz)
RAM	4 MB main (WRAM) + 64 KB VRAM (per engine)
Screens	2 × 256×192 (262K colors). Top: main engine. Bottom: sub + touch.
Input	D-pad, A/B/X/Y/L/R, Touch (resistive), Mic.
Storage	Cartridge (ROM) + Save (EEPROM/Flash/NAND)

3. Core Libraries

libnds – Hardware abstraction (video, input, DMA, IRQ, sound).
libfat – FAT filesystem on SD/flashcart.
maxmod – Audio streaming (MOD, XM, IT, WAV).
NFlib / NitroFS – 2D sprite/background engine, filesystem-in-ROM.
Box2D / Chipmunk – Physics (portable C).

4. Development Workflow

Design: Concept, mechanics, scope (keep first game < 3 months).
Code: C/C++ main loop: while(1) { scanKeys(); update(); render(); swiWaitForVBlank(); }
Assets: Convert images → 15-bit BMP / PNG → grit tool → .h/.c arrays. Audio → mmutil → .bin.
Build: make → produces .nds (ROM) + .elf (debug).
Test:
- Emulator: melonDS, DeSmuME, NO$GBA (debugger).
- Hardware: Flashcart (EZ-Flash Omega, R4i Gold 3DS+) → copy .nds to microSD.
Iterate: Debug with nocash (NO$GBA) or gdb + gdbstub on hardware.

5. Distribution

Homebrew: Share .nds on DS-Homebrew GitHub, dsiBrew, itch.io.
Cartridge: Small-run manufacturing via Flashcart.co.uk (min 50 units).
DSi/3DS eShop: Not open to indies (closed 2023/2024).

Learning Resources

devkitPro NDS Tutorial – Official "Hello World" to sprites.
raylib – Supports DS via PLATFORM_DRM (experimental).
Tonclib – Classic GBA/DS tutorial (C, hardware-focused).
Book: Programming Nintendo DS (Jonathan Harbour, 2007) – dated but thorough.

Legal Note

Official Nintendo SDK (NITRO-SDK) requires approved developer status. Homebrew with devkitPro is legal, community-supported, and how most modern DS games are made.

Nintendo DS