There are few very good solo games I would recommend:

• Thousand years vampire is a journaling game about being a vampire through history.
• Under falling skies is kind of a space invaders/independence day.
• Sleeping Gods is a sandbox game where you have a ship crew in a big world to explore, trying to wake up the gods.
• Waste Knights is similar to Sleeping Gods, but in a Mad Max apocalyptic wasteland world.
• Witchcraft! Is about witches and pretty fantastic solo.
• Maquis is a neat quick game about running the Resistance in an occupied French town.
• In the Ashes is a pretty fantastic game-book and an easy recommendation for anyone that likes fantasy books but also likes games.