I love that you have a README and License file (main criteria for open source category). The use of screenshots is fantastic and very comprehensive README, nice work.
Really awesome, different approach to the balance theme. I enjoyed your graphics and art-style; very much fits military vibes. The game is fairly intuitive to understand and play, I like that it starts easy and gets harder. It'd be great if you can add some music and sound effects; that would make your game lots more immersive. Great job on your submission.