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SPECIFICTION
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MasterEmu

github.com

Free plan Android
Visit github.com
Spec score 7.4 #14 of 25 in Sega Master System Emulators

What it is

MasterEmu is a free, open-source Android emulator for Sega Master System and Sega Game Gear. It loads .sms and .gg ROM files from internal or external storage, including ZIP archives. The app supports Pro Action Replay and Game Genie cheat codes, physical controllers, and button remapping. Users can save and load emulation states, import or export states, and use automatic SRAM saving for supported ROMs. Display options include auto-rotation, locked orientation, widescreen, and optional 4:3 horizontal presentation. The listing states support for Android 4.4 through Android 13 and Android TV. MasterEmu has no ads or in-app purchases, and its source repository is on GitHub. Users must obtain ROMs legally; the maker does not provide sources. The maker identifies himself as a lone programmer and says he is not affiliated with Sega. Support is available at [email protected].

Spec sheet

Purpose
MasterEmu is an Android emulator for Sega Master System and Sega Game Gear.Read 2 Oct 2026 · github.com
Support
The app listing gives [email protected] as the support email.Read 2 Oct 2026 · play.google.com
Maker
The maker describes himself as a lone programmer and says he is not affiliated with Sega.Read 2 Oct 2026 · play.google.com
Android support
The listing states support for Android 4.4 through Android 13 and Android TV.Read 2 Oct 2026 · play.google.com
Cheat codes
The app supports Pro Action Replay and Game Genie cheat codes.Read 2 Oct 2026 · play.google.com
Controllers
It supports physical controllers in menus and during gameplay, with button remapping.Read 2 Oct 2026 · play.google.com
Display options
It offers auto-rotation, lockable screen orientation, and widescreen or optional 4:3 horizontal display.Read 2 Oct 2026 · play.google.com
Game files
Its file browser can load .sms and .gg ROM files from internal or external storage, including ZIP files.Read 2 Oct 2026 · play.google.com
Maker background
Phil Potter says MasterEmu is among his programming projects and that he is a fan of retro games and Linux/Free Software.Read 2 Oct 2026 · philpotter.co.uk
Open source
The maker describes the project as open source and links its source repository on GitHub.Read 2 Oct 2026 · play.google.com
ROM requirement
The maker says users must obtain ROMs legally and does not provide sources for obtaining them.Read 2 Oct 2026 · play.google.com
Save support
The app supports saving and loading emulation states, state import and export, and automatic SRAM save handling for supported ROMs.Read 2 Oct 2026 · play.google.com

Plans and prices

MasterEmu Free Android app · no ads or in-app purchases Read 2 Oct 2026 · play.google.com

Every MasterEmu plan and price →

Strong points and limits

Strong points

  • Free Android app with no ads
  • Supports Master System and Game Gear ROMs
  • Physical controllers and remapping supported
  • Save-state import and export available
  • Open-source project with GitHub repository

Limits

  • ROMs must be obtained legally
  • Android is the only listed platform
  • Maker is not affiliated with Sega

Who it suits

MasterEmu suits Android users who play legally obtained Master System or Game Gear ROMs. It also suits users wanting controller support, save states, and cheat-code compatibility.

Verdict

MasterEmu offers a free Android emulator with broad save, display, controller, and cheat-code support. ROM sourcing remains the user's responsibility.

Where Specifiction places it

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