Hi, @walter, You need that the narrative and playability can be done by the same person who will be GM and player both at the same time. Here at itch.io there are tons of game, and though most tend to use cards and dice and tables to throw the randomness needed by the solo player to spark his/her creativity and ignite his narrative. Other ways are with gm emulators, whose techniques are applied directly in many games so that they become directly soloable.