From the introduction:
Loner is a minimalist Solo Role Playing Game designed to be played with only one character (the Protagonist). You'll guide them through the story that will unravel during the game, asking closed questions to an Oracle which will help you overturn your expectations. Every now and then you will be surprised with an unexpected twist!
Loner follows the following design principles:
1. Portable: to play you will need a few common (six- sided) dice and writing materials. Anything else is op- tional and not essential.
2. Rules-Light: the game relies on a few rules and only one solving mechanic, easy to learn and eventually to memorize.
3. Tag-based: characters and situations are defined only by qualitative descriptors and no quantitative charac- teristics.
4. Generic: you can play anything, yet the game is not universal. It is designed for quick resolutions, without tactical depth or simulationist ambitions.