Emu198x vs MasterEmu

Emu198x is a free, open-source emulator suite for running vintage computers and consoles through JSON scripts or an MCP client. Its registry lists 30 machines, with boot captures available for 29. Scripts can automate actions such as advancing frames, querying a CPU register, and saving a screenshot; documentation also describes capturing frame sequences and audio. Each machine binary can act as an MCP server, exposing tools to run frames, inspect state, handle input, and capture output. Clients connect over standard input and output using JSON-RPC. The maker says repeating a script produces an identical report and byte-for-byte matching screenshot. Release archives are provided for Windows, Linux, and macOS, including separate Apple silicon and Intel Mac builds. Emu198x does not supply commercial ROMs, firmware, disks, tapes, or cartridges, so users must provide required files. The accuracy page reports crate counts and boot-capture status rather than percentages or maturity scores, and SHA-256 sums are available to check downloads.

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].