I love retro handhelds, but sometimes I feel like I spend more time managing games, folders, emulators, cores, settings, scraping, and themes than actually playing.
So I'm building UnuOS, a simple custom OS based on MinUI.
The goal is not to be the most feature-rich firmware. The goal is to make a handheld feel like something you can just pick up and play.
One feature I recently added is Game Focus Mode. When a `Selection.txt` collection exists, UnuOS only shows the games in that collection. Settings, recently played items, and everything else are hidden.
The idea is simple: choose a small set of games, turn on the device, and play.
UnuOS also includes:
- Multi-language UI
- Screenshot support
- Practical shortcuts for common actions
- MinUI-style launcher
- Support for multiple small handhelds
- Hardware-tested support for Miyoo Mini, Miyoo Mini Plus, RG35XX Plus, RG CubeXX, and RG28XX
I started this fork partly because many retro handheld OSes assume English by default. As a Japanese user, I wanted
something I could comfortably use myself and also hand to non-English-speaking friends or family.
Project:
https://github.com/retronian/UnuOS
No ROMs, BIOS files, or copyrighted content are included.
This is still early, and I’d appreciate feedback from people who also prefer a simpler, more focused handheld experience.
Small note: this project was previously called OneOS, but I renamed it to UnuOS because there are already many projects using the OneOS name. “Unu” means “one” in Esperanto.