It took me some seconds to understand the game.
The color game is a bit confusing, in the main menu, I guess the color more black is unselect and the bright color is select.
In the game, my bullets empty and I don't know how can more bullets, because it's not easy to understand to me go to box and press button to reload.
The rest, I like concept game, when you use your gun to shoot enemies only in Right and Left direction :). It's balanced too.
Continue in that way, always improving yourself.