You could check out the Best Solo TTRPG nominees for The Crit Awards
Pirouette by Michael Sweeney
Odyssey of the Giant by Heltung Storytelling
Song of the Scryptwyrm by Almost Bedtime Theater
Underneath by Seb Pines
Heir of Swords by Yanni Panagiotopoulos
For OSR: solorpglist.com/search.php?s...
solorpglist.com
Solo RPG List - Search Solo and Duet TTRPGs
Discover amazing solo and duet tabletop role-playing games that can be played with—or without—dice, tarot cards, playing cards, pen and paper, etc.