I don't like how overpowered small tanks are. Give yourself one gun and one small bubble, both reduced to the smallest size possible. Stack them on top of each-other. Save and exit. Now you are such a small target, you will never get hit. Ever. It's an IWIN button that breaks the game, since there is at the moment no reason to build a tank larger, and in fact doing so will make you an easier target.
It would be nice if when I bought a plane that appears to have two forward-facing guns they actually fired forward parallel to each other instead of off in a fork.
This is fun, but it would be nice if this game would lose its tendency to allow my mouse to go off screen while firing which selects everything on the webpage and locks up the game until I can get the mouse back to it.
After playing through the game, I have one comment and one question.
Comment: You spelled the word "artifact" incorrectly in every instance throughout the game.
Question: Where was the challenge? The entirety of the game was nothing more than a simple grind of patience rather than any sort of real challenge.