I think this is a fun game that could definitely be worked into something really good. However, I do think that there should be a tutorial level or something similar, an example being you had a level at the beginning with only one box. It takes a while to learn the controls and understand the game, so I feel like some safer environment needs to be available at the beginning of the game. It took me 15 tries or so to finally understand what to do with the boxes (though I may just be bad) and I considered stopping because I was dying for seemingly no reason. It seems like a fun gameplay concept, especially if there were variations and different levels such as there being more bullets, more box colors, or different positions for the box targets. Overall, I enjoyed my time playing, just the beginning was a little bit frustrating for me.