The game has a fair difficulty rate so it does get more engaging the more you progress! However, I suggest improving your UI as it's quite difficult to make out what is what. Making the score and best fonts a bit bigger and more bolder will make it easier to read (although change the score font color to something that is not green, blue or yellow as it's hard to read due to the background), as well as labeling the bar at the bottom (which I presume is a health bar for the player). It's a simple and fun game otherwise.