The basic game play is fun and the little square guy is cute. Although I feel like the game really needs a reply button. Half of the time, the guy has already fallen off the screen by the time I can load the page and blink.
I feel like this concept is hurt by the theme more than it helps. The game doesn't really feel like it justifies having a timer for how long not to let the little guy fall. It's not really a challenge to justify having the timer. And the time ending interrupts the game play. I feel like the game would be a lot more fun being high score based, challenging players to bounce the little guy as many times as they can without letting him fall.