Stardew Valley was released in 2016. My understanding is it took 10 years to make (Eric Barone worked at a movie theater, and when he wasn’t at work he was working on the game) and he’s been supporting and releasing new content for the game for 8 years now. The Wiki pages for the characters contain the artwork for the characters he’s drawn, and redrawn, and redrawn over the years.
He basically won the cozy farming genre, it’s time to move on, for his own health if nothing else.