The concept of this game is really neat. My only problem with it is that it's really hard to hit the enemies. For the normal ones that's mainly due to the rocket and enemies being rather small on the actual screen. When shooting the ship, I was never sure where I need to shoot the bulle so it does that auto lock-on thing when it comes close. And it's also hard to judge whether it'll hit a wall or not. I think most of it comes down to the game being very small though.