Really fun arcade game, nice work!! There's a really nice trade off having the movement locked when you're not in the center that forces you to think about your actions rather than constantly shooting and moving around the map. Lots of polish (both visual and auditory) that gives the game a good amount of juice: the ball trails, the glow effect on the pentagon when you bounce off the sides, the alarm beeping as you run out of health. The grid background fits the aesthetic perfectly. It all works well together for a cohesive and complete experience. You nailed the theme. I've played a couple other games that have done the sphere bouncing around in a pentagon thing, but you took it to the next level by letting the player move the pentagon itself and traverse the limited space of the grid. I think adding an online leaderboard would add a lot to the overall experience and add a lot of replay-ability. Great entry!!