Excellent! You nailed the UI for Picross--very responsive controls (which are surprisingly important when solving these puzzles quickly!). This has become my most-played Playdate game.
The only thing that's missing for me are some nice minimalist sound effects when navigating, filling, and marking. Also, I can't wait for the Playdate SDK to get network functionality so we can upload our puzzles :)
Great work. It was a steal at $2!