Calypso

Calypso is a narrative solo TTRPG system, Powered by the Apocalypse, revised from the original Compendium and blended with new techniques developed over several years of play. It is designed to support an open-ended, strongly narrative (as in "writing with dice") style of solo gaming that aims to produce an experience that's as much fun in the moment of creation as it is to read later!

It doesn't try to model a traditional GM and player experience, instead letting you, and your own reservoirs of creativity, steer the show (and push your characters around) overtly, using dice, system prompts, and step-by-step scene guides to build and maintain momentum.

It is divided into four sections:
core, with the base system, complete with a simple motifs-based framework to guide your story, and ready to play with whatever premise inspires you
scenarios, containing seven (gently) evocative premise packages (aka, scenarios)
frameworks, with four robust narrative structures that insist you finish what you started
appendices, with alternative motif charts, a people and motivation generator, some random event tables, co-op and GM-led play instructions, and troupe play mini-framework and mini-scenario.