Thanks so much for the recommendations! I'll go through them today.
I've got Slay the Spire (love it! exactly what I'm looking for), Terraria (great, but I played it more when I had friends to play it with), and HoloCure (also love it, on my way to max all the characters).
"A blank page or canvas, his favorite. So many possibilities."
- RIP Stephen Sondheim, 1930-2021