Cool concept! I maxed out at 5. I think it may have worked better on a grid, so you can memorize spaces in your head instead of having to time your speed.
Beat my score: can't beat 4 lol. Glad you like the concept, appreciate the feedback!
I thought of having a grid, but was liking this system better. Definitely kind of makes more sense, but thought it felt smoother to have it this way. Might re-evaluate if I work on this more in the future: it's a good suggestion.