I've tried nearly all the entries so far, this one might just be my favourite, like Lemmings with ADHD
Very difficult (IMHO) - but doable; coordination, timing, hand-eye all very important. My only critique, for my poor old brain the time constraint (although perfect to the theme) was VERY tight, erring more toward frustration than a sense of challenge. Stunningly minimal but what a great little game.