RetroArch

RetroArch is one app that plays almost everything. It is a free, open-source frontend that wraps individual emulators, called cores, for dozens of classic systems - NES, SNES, Genesis, PlayStation, Game Boy, arcade boards and many more - behind a single interface and a single set of settings. Install one program, download cores from inside it, and your whole retro library lives in one place, organized into playlists the app can scan and name automatically.

The unified part is what makes the setup worth it. Controller mapping is configured once and works in every core. Save states, rewinding, fast-forward and run-ahead latency reduction behave the same everywhere. Shaders are a point of pride: CRT filters with convincing scanlines and phosphor glow, LCD grids for handhelds, xBR and hqx upscalers, all chainable per game or per core. If you care about input lag, the run-ahead feature can make old games feel snappier than the original hardware did.

Netplay deserves a mention too: RetroArch takes local-multiplayer games online with state syncing, so a 1993 co-op title works over the internet. RetroAchievements support is built in, adding modern achievement hunting to the classics. The current stable, 1.22.2 (November 2025), runs on Windows, macOS, Linux, Android and iOS, and the whole thing is also free on Steam. The same build system targets far more than desktops: official Android and iOS apps, Raspberry Pi images, even builds for hacked consoles, which is why RetroArch is often the first thing installed on a handheld retro device. Box art and thumbnails download automatically once your games are scanned into playlists.

Each core is its own project with its own accuracy level, so quality varies: the big systems (Nintendo, Sega, PS1) are excellent, while more obscure machines can be rougher. Cores update independently through the built-in downloader, which keeps everything current without reinstalling the app.

The honest downside is the learning curve. RetroArch exposes everything, and its menus assume you know what a core, a shader chain and a content directory are. New users should expect an evening of setup with the wiki open. For a single console, a standalone emulator like PCSX2 or DuckStation is friendlier.

Legally, the app and its cores are free software (RetroArch itself is GPLv3); you supply your own game dumps. Updates land regularly, with stable releases every few months and nightly builds for the impatient. For a one-stop retro setup that behaves consistently across systems, RetroArch is the standard answer.