He needs to add more than 1 life in one game this kind of reminds me of Space Invaders based on Flash and the real game and that has 3 lifes...

Slow it down and then speed it up.

Shield should be switched to letter 'S'.

Spacebar needs to have an option to shoot; has no way of defending itself besides Shield which can only be used once and you can't turn it off to conserve shield power (add shield power)

Even add another block like 'Blue' for more shield or something...


Click on it and the press, I figured that out.