Thanks for all the feedback. We're very happy to have our first/second game rank so consistently above-average.
We've been able to address some complaints as the jam was ongoing, and have updated the game, with: instructions how to play in the main menu, easier easiest difficulty, a New Game that works, (far) less stuttering, a way to win by just capturing space (and a display for it), and a score that can easily get into the hundreds of thousands!! :D