This is a phenomenal game, addicting and easy to learn. As others have said - would make a perfect mobile game.
If I had to make one suggestion: At least for learning how to play, a tracer line indicating what angle the ship will make as you're charging. I get that the idea is to die a lot up front until you get the hang of it, but I felt that it was a hair too punishing at first because the speed/angle changes continuously, but there is a step change in color. So I found myself trying to correlate the yellow ship color to a 45 degree angle to make it through the gaps - and that's not how it works.
I also tried playing with multiple input devices (keyboard vs mouse) and found the game played significantly differently. On a mechanical keyboard, the 'default' ship speed was slower because a button press takes longer than a mouse click. I'm guessing this is just a product of the way it was coded. That's one reason i think this would go well on mobile, because it could be tuned for one input method (touch)
I think you're on to something here and would certainly pay money for an expanded version of this game. good job!