Thank you so much for this comment. It's really great for people to criticise my game.
Also I'm aware that the UI of the game is non scalable thus making it difficult to see in larger displays, I'll try to find a solution to that ASAP. And about that visualization, I didn't have enough time to release so I just added some stars to help player see its movement. Although I'll keep that in mind, maybe shooting stars may look good!