It looks pretty good, I like the grass. The cow though, doesn't look right, the front leg looks like it's part of the neck, and it's way too skinny. If you look at cows, the bottom of the stomach comes a lot lower than that, something more like this. And it doesn't have udders, which most cows farmers grow are female. But it's looking pretty good.

Although dried ground looks more like this
Or it just wouldn't have cracks, it would just be lighter in color.

And personally, I think the darker soil needs a little more detail. It just looks flat with little tiny bumps. But it still looks pretty good, keep up the good work.

Could you explain the game to us a little?

HereTic made a bunch of key points, and all I can add to that right now is that the cow is in a different angle from the ground it's standing on? Is there any way you can pixel that cow from a steeper angle?