Thank you for trying the game.
I like your idea of adding a explicit button to advance dialogue. Usually clicking anywhere is enough with the main hub being the exception. Another function which can only be accessed through the keyboard is the speed up/down setting which is something I would like to turn into a button in the screen as well.
I'm glad you liked the art. Nothing is high resolution whatsoever so I'm afraid that might just be inconsistent quality. This project has been a learning experience for me and the visuals are a part of that.