https://itch.io/jam/gamedevtv-community-jam/rate/658251 is my favourite for gameplay so far, its the one I've been annoying my family to try
https://itch.io/jam/gamedevtv-community-jam/rate/631273 this one is second for now - I love how the game expands as you interact with it
One silly idea I've had for yours is that the farmers family appear near the top of the screen each daytime, and depending on how you have progressed that cycle they either look more or less happy, if you are adding more chickens they do a dance and wear nicer clothes, otherwise they mope around with torn clothes, a feedback to the player to keep going, a progression if you will.
Whilst playing I thought that after I got down to one chicken and then voila I created a second one there was no real reward for doing so.
I'm not talking about things that should be there for a Jam though of course, but things to make it a commercial product. The other two games need polish or more content, but what they did in gameplay is a rough diamond.