I liked it too. It is my type of game (big and late!) I would have liked a game over screen so I could track progression but I am sure that will follow soon.
Good point below, I assumed I was missing something about my ability being "ready", but some games just expect you to figure this out without hand-holding. It makes for some interesting plays.
Also the game wanted to run fullscreen but the page didn't accommodate this. Pressing F11 certainly helped, I would say it was borderline unplayable without it, but I can use a browser.
At first I thought I just ran away spreading my bad seed, until I regained control of the browser and found the "special", and my reward, was not crows in fields, but some collectible that evidently affects my "score"; for what that is worth.