gearsystem ☆

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Description:
Sega Master System, Game Gear and SG-1000 emulator

Type: Cask | Latest Version: 3.8.6@0 | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Multimedia

Tags: emulator retro-gaming sega game-gear master-system

Install: brew install --cask gearsystem

About:
Gearsystem is a highly accurate, multi-platform Sega Master System, Game Gear, and SG-1000 emulator. It provides a robust emulation core that prioritizes correctness and performance, making it suitable for both gaming and development testing. The tool includes advanced features like a disassembler and memory editor for deep system inspection.

Key Features:

High-accuracy emulation for Z80 and VDP chips
Cross-platform support (macOS, Windows, Linux)
Integrated debugger with disassembler and memory viewer
Support for Save States and Game Genie/Pro Action Replay cheat codes

Use Cases:

Playing classic Sega 8-bit games with high fidelity
Retro game development and ROM testing
Analyzing game code and memory through built-in debugging tools

Alternatives:

MESS/MAME – MAME is a broader multi-system emulator, while Gearsystem is a dedicated, lightweight emulator focused specifically on Sega 8-bit systems.
Emulicious – Emulicious offers similar high accuracy and debugging features but supports a wider range of systems beyond just Sega 8-bit.

Version History

Detected	Version	Rev	Change	Commit
Aug 27, 2025 4:30pm	3.8.4	0	VERSION_BUMP	a5fa7e95
Aug 10, 2025 7:01pm	3.8.3	0	VERSION_BUMP	6d6e42e2