Surprisingly fun game!
Props for making the game so self-explanatory! The player will instinctively what to do and what to prevent. Seeing the ship sink, hearing the music change pitch; it's great example of "show, don't tell"
I was getting scores <50 when using the mouse, switching to my drawing tablet made a world of difference!
For some reason flicking to the top of the screen seemed to be way less effective than flicking to the bottom? Not sure why (or if it is just my imagination). Might just be that the hand was covering the indicator making me less accurate?