Befallen can be played solo or with a small group, with or without a GM. It has a custom dice system that threads through skill rolls and combat that smashes your roll DC and your skill roll into a single dice throw, meaning if you're playing solo or without a GM you aren't rolling against yourself.

You’ll create your character, take on quests, unravel plots, fight monsters and try not to be corrupted by dangerous otherworldly entities intent on gaining a foothold in our world, all while unraveling your obsession—the mystery that you have dedicated yourself to solve.

For me, it's Befallen. It was a GMless mechanical design had a lot of iteration and work go into it, but it's had a lot of trouble grabbing an audience. Still by far my favorite thing I've ever designed.

circe10.itch.io/befallen

The biggest mood.

Me: "I'm going to do a little cool down sketch..."
3 hours later
"This was neither a cool down, nor a sketch" *rage crying*

I'm not great at marketing. It gives me the most anxious of anxiety. But I like to think I make good games.

And Muse, my little solo journalling game about being an artist haunted by an eldritch muse, is always free.

www.drivethrurpg.com/en/product/4...
circe10.itch.io/muse

And Itch:
itch.io/s/139383/aut...

If you don't have either Befallen or Utopia, Itch is the better deal, since they're basically 2-for-1 if you buy them together.

It's been my favorite as well.
Though I started it at like 11:30 pm thinking it would be another 15 min quest. I climbed into bed like 2 hrs later, eyes barely able to stay open (that bossfight took me a few tries to get through). lol

Forgot to include the alt text on this image (shaaaame). So reuploading the image with alt-text and a bonus bit of art that hasn't made it's way into a post yet - an Avatar of the Watcher Beneath the Waves (a dead god and one of the Corrupting Powers).