The game is very beatiful. You are very good at pixel art! I think it would have been much more interesting if yyou added audio. It don't has to be much but maby a few sounds when you wlk or feed a pig would have been awesome. For the score and timer I would have used a pixel art font asset (It would fit the artstyle better). You don't have to make one yourself, I think Unity has one build in.
Overall a very solid, fun experience with amazing pixelart! Very cool!