Not very good.
My heart first started to sink when I read the author's comments and saw the horrible spelling errors. Would it have been too much effort to put it through spell check? The second mistake was having the play button bounce around in an attempt for us to try and catch it to click it, that's just tacky. That's two major turn offs before we even reach the game itself.
The animation was simplistic to the point of redundancy, clearly not an aesthetic choice so much as minimal experience on the part of the animator. The game play itself was boring; jumping over the boxes gave me zero satisfaction. Then I miss judged the jump for the first time and landed inside the box, the coding was glitched so the game did not recognize it, you only fail the game if you walk straight into the box.
To summarize, poor quality with no redeeming features.