Meet RetroMao

RetroMao is a local-first Android frontend for retro games. It organizes your library, displays media, launches emulators and syncs files. It doesn’t emulate games itself.

Key features

A library that feels physical: 3D box and game media models for 35 systems, using Japanese designs by default.
Local first: Works with no cloud storage and no account. Launching a game doesn’t need a network.
Automatic organizing: Pick a ROM root folder once. RetroMao finds system subfolders, matches media with the same name and reads compatible indexes.
Controller first: Default controls, button mapping and A/B layout are all configurable. Touch works too.
Cloud sync: Sync ROMs, media and saves over WebDAV or Baidu Netdisk, tracked by RetroMao’s own index.
Save version history: Saves sync when you say so, and you choose when histories diverge. Past versions stay in your own cloud storage.
Sync on a real 3DS: A separate 3DS app reads and writes saves directly and shares one set of cloud saves with the Android app.
Fits your screen: Designed at 16:9 and adapted to 4:3, 1:1 and dual-screen handhelds.
Extensible: Plugins add features and pages, system packs add systems, themes change the look, and anyone can translate it. Development happens in a public repository, without the app’s source code. See Plugin system.
Multilingual: Includes Simplified Chinese, Traditional Chinese, English and Japanese, and you can download community languages.

What RetroMao doesn’t do

It doesn’t use files from other frontends such as ES-DE as its day-to-day index. Imports are converted to RetroMao’s own data.
It doesn’t sync saves unless you ask, and it doesn’t automatically delete saves from cloud storage.
Installing extensions doesn’t upload your ROMs, saves or cloud credentials.

Where to start

Install the Android app
Get started: add a ROM folder and set up emulators
To sync between devices, read Cloud sync and Save sync

Want to help build it? See Contribute.