gearsystem ☆
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Description:
Sega Master System, Game Gear and SG-1000 emulator
Type: Cask  |  Latest Version: 3.9.3@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
Mar 30, 2026 4:28pm 3.9.3 0 VERSION_BUMP 15689970
Mar 25, 2026 7:09pm 3.9.2 0 VERSION_BUMP 96c89923
Mar 15, 2026 1:07pm 3.9.1 0 VERSION_BUMP 448fefcd
Mar 8, 2026 4:29pm 3.9.0 0 VERSION_BUMP 9d4b4488
Aug 27, 2025 4:30pm 3.8.4 0 VERSION_BUMP a5fa7e95
Aug 10, 2025 7:01pm 3.8.3 0 VERSION_BUMP 6d6e42e2
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