READ ME.
The goal of this game is to get 1000 coins before the aliens kill you or you starve to death. You can sell cows to the aliens for money or you can eat them yourself to survive. Move with WASD or arrow keys. Remember if you don't sell your cows for a while the cows will rise in value but if you wait too long the humans will starve due to overpopulation. You will have total over population after you kill the fifth cow stack. A new herd of cows will grow every five seconds. Look out for the herd of aliens, they will try to kill you. 
And in the beginning you are killed like in less than a second when you have not yet figured out what to do.
As @david-markham stated, there are a couple of bugs but you're definitely going in the right direction.
Hope to see you in the next Ludum Dare and keep on making games.
The food timer seems to tick down very rapidly after a few clicks and could only get to about 500 coins.