Really like the animation on the main menu. Game concept is great as well, can see this growing being a sort idle clicker style game. Could have sprinklers that auto spray water every 20 seconds to keep the workers cool and crops growing type of thing, money collected from harvest could be used for upgrades to workers speed, crop growth etc.
Further to other comments maybe a game over state could be considered; such as if a worker isn't cooled off quickly enough they are unable to work until the game is restarted, that way it would effect crop harvest rates.
