Game development is not a career where many people make a fortune. Most are lucky to get back the monetary cost of their project. Occasionally, you see the opposite, such as what happened for the solo developer behind Dwarves: Glory, Death and Loot.
That dev, operating under the name Hamma Studios, made a Reddit thread commemorating the four year anniversary of what's now a notable milestone for their career. In July 2022, they noted a flurry of activity on the Itch.io demo for what would become Dwarves, as it was played over one thousand times.