I really like your implementation of the last chance round with swapped controls. It’s a great high tension moment to try and recover your run. Zen mode was also a great choice as it let me get used to and understand the controls before getting into it. I’d even consider putting zen mode first and call it “practice” mode. Add some music and some animations (to make it clear how squares are moving out of bounds) and you have a great game on your hands! I really hope you decide to continue working on this.