Okay, I'm giving you just one star, but I will also give you constructive criticism in the hopes you improve.

Give the game a title screen and instructions, those two alone are critical components in a game. Do not just dump a player into the game as soon as it's done loading with no instructions or a title screen to give a player time to themselves ready.

Also, no restart button is bad, you do not want to force players to restart the web page just to try the game again.

And lastly, do not leave the game's info section right below the actual game window empty, ALWAYS put something there, such as general context or info on the game, or even just a courtesy thanks for people trying out your game.
Also putting the controls there are a good idea, as it's always great to have a control sheet there for people to glance at, even if you have the controls explained in game.

Take care, I hope you improve on your design and technique! :)