Really great game
I love the way the rules add up bit by bit, and the difficulty curve feels very nice
The game feels very polished, and it's really impressive how well balanced it feels given that it's a jam game
It could be nice if you could add localization for different keyboard layouts though, but it's not a major problem since you're only asking for WASD and most people are familiar with their placement on a QWERTY keyboard (it might just add a slight handicap)