No. 20 of 54 ·Multi-System Emulators

jgenesis

Web · Windows · Linux

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Freedom report

Two barsScore 5.5

Free tierNo free tier on record
Open codeNo open-source code on record
Runs widely3 of 6 device platforms
DocumentedPlans, terms and facts published

jgenesis is ranked #20 of 54 in multi-system emulators on Freedom251. It runs on Linux, Web, Windows.

Compared on multi-system emulators

Free plan: Yes

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The record

Purpose: jgenesis is a cross-platform emulator for 8-bit and 16-bit gaming consoles.
Supported consoles: It emulates Sega Genesis/Mega Drive, Sega CD, Sega 32X, SG-1000, Master System, Game Gear, NES, SNES, Game Boy, Game Boy Color, Game Boy Advance, and PC Engine/TurboGrafx-16.
Platforms: Linux, Windows, and web (WASM) are officially supported; other platforms may work but have not been tested.
Graphics: The emulator has a GPU-based renderer with integer prescaling, optional linear interpolation, configurable pixel aspect ratios, and blur and anti-dither shaders.
Save and playback controls: It supports save states, fast forward, and rewind.
Controllers: It supports keyboard and DirectInput gamepad controls, including 3-button and 6-button Genesis controllers.
Expansion hardware: It supports Sega Master System FM sound, the Genesis SVP chip, common NES mappers, and most SNES coprocessors.
Notable limit: PC Engine/TurboGrafx-16 CD-ROM support is not yet available.
System requirements: Published release builds require a 64-bit x86 CPU with SSE4.2; the GPU must support Vulkan or, on Windows 10 and later, DirectX 12.
License: Repository code is licensed under GNU GPL v3 unless a file states otherwise; some shader files use MIT, and the egui-wgpu-fork code retains MIT and Apache 2.0 licenses.
Builds: GitHub Actions compiles release builds on every commit, and those builds remain available for 90 days; the project notes they may be buggy and are not always well-tested.
Latest release: The releases page lists v0.14.1 as the latest release and describes it as a bugfix for a 32X aspect-ratio regression.
Product: jgenesis is a cross-platform emulator for a range of 8-bit and 16-bit game consoles.
Emulation features: It supports save states, fast forward, rewind, select expansion chips and coprocessors, and optional CPU overclocking on some systems.

Where it ranks on Freedom251

Best Multi-System Emulators in 2026#20 of 54
Best TurboGrafx-16 Emulators in 2026#15 of 32
Best SNES Emulators in 2026#14 of 31
Best Game Gear Emulators in 2026#17 of 30
Best Sega Genesis Emulators in 2026#16 of 29
Best Sega Master System Emulators in 2026#12 of 25
Best Sega CD Emulators in 2026#12 of 19

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Sources

github.com/jsgroth/jgenesis· checked 4 Oct 2026
github.com/jsgroth/jgenesis/releases· checked 4 Oct 2026
github.com/jsgroth/jgenesis/blob/master/BUILD.md· checked 5 Oct 2026