Stephane-D/SGDK

Free

SGDK - A free and open development kit for the Sega Mega Drive

FreeFree tier

Type

Open Source

Visit Website GitHub (38 stars)

About Stephane-D/SGDK

SGDK is a free and open-source development kit for creating software in C programming language for the Sega Mega Drive (also known as Sega Genesis). It provides a complete library with source code, custom resource compilation tools, and relies on the GCC compiler (m68k-elf target) and libgcc to generate ROM images. Binaries are pre-built for Windows, and the kit also requires Java for its custom tools. The library and custom tools are distributed under the MIT license, while the GCC compiler is under GPL3 with runtime exception. SGDK includes an online Doxygen documentation covering all structures and functions, and a wiki with installation instructions and tutorials. Last updated in April 2025 (version 2.11).

Key Features

Develop Sega Mega Drive software in C language

Complete development library with source code provided

Custom resource compilation tools for graphics, sounds, etc.

Uses GCC compiler (m68k-elf target) to generate ROM images

Pre-built binaries for Windows; cross-platform with manual installation

Online Doxygen documentation for all library structures and functions

Wiki with installation guides and tutorials

MIT licensed library and tools; GCC under GPL3 with runtime exception

Active development with recent release (v2.11, April 2025)

Pros & Cons

Pros

Free and open-source with permissive MIT license for library
Comprehensive library and tools bundled in one kit
Active community and ongoing development (latest v2.11)
Good documentation via wiki and Doxygen
Cross-platform support (Windows binaries provided, other OS can compile)
Uses industry-standard GCC compiler

Cons

Requires knowledge of C programming and Sega Mega Drive hardware
Java dependency for custom resource tools
Not beginner-friendly for those new to retro development
Only targets Sega Mega Drive (limited to one platform)
Manual installation needed on non-Windows systems

Best For

Homebrew game development for Sega Mega Drive / GenesisLearning retro console programming and hardwareCreating demos or ROM hacks for the Mega Drive platformEducational projects for understanding 16-bit game development

FAQ

What is SGDK?

SGDK is a free development kit for creating software in C for the Sega Mega Drive. It includes a development library, custom resource tools, and uses the GCC compiler to generate ROM images.

What programming language does SGDK use?

SGDK primarily uses the C programming language. Assembly is also possible but not necessary.

What platform does SGDK target?

SGDK targets the Sega Mega Drive (also known as Sega Genesis) and generates ROM images compatible with emulators and hardware flash carts.

Is SGDK free to use?

Yes, SGDK is free and open-source. The library and custom tools are distributed under the MIT license, and the GCC compiler is under GPL3 with a runtime exception.

What tools are required to use SGDK?

SGDK requires a GCC compiler (pre-built binaries for Windows are included) and Java for custom resource tools. A text editor and basic knowledge of the Sega Mega Drive hardware are recommended.