I'm not saying it's a bad concept - far from it - but I saw this and immediately remembered there's a flash game based on the Cartoon Network show "Steven Universe" with pretty much the exact same mechanic, only in reverse: you have to climb a series of platforms as high as you can go while avoiding enemies. Then, when time runs out, you fall back down, this time ramming into every enemy you can. The higher you go, the longer the fall, the more points you can earn.