solo rpg solo play game master table method listen narrative cheat sheet faq summary oracle combat ai voice random generators podcast theme inspiration solo creativity guide beginner experiment story strategy free paid module conflict demo review scene exploration rules list emulator video roleplay improvisation published solo gm dungeon crawl expansion main page gwydion solodark workbook drivethrurpg cthulhu criticism campaign hexcrawl motivation personalization crunch solo-play module pwyv imagination hex-crawl gameplay supplement wisdom cheat free module shadow dark tweaks 2d6 dungeon choose your own adventure guide meta overview ian irvine