Now, contrary to what the users below have written, I do not believe this game to be original by any measure. Perhaps they were not familiar with the Flash gaming scene when Civiballs and Boombot were big names. These games don't have the same mechanics as this one, of course, but there were similar games around that time period that did. Even most of the elements, like disappearing tiles, are cookie-cutter elements that have been used for as long as we can remember.
Still, originality is not the sole factor with which I would judge a game. I think the game does offer us a good playing experience, and the time spent on this game is not time wasted. The level designs, while not crafted by a master in the art, are good. Dying after getting hit too many times and being able to jump midair are good touches as well, even if the latter might make the game a tad easier.
To conclude, no this isn't a bad game at all. I'd like to say the game has potential to be more, and it certainly has, but since this is the third instalment, I'm not sure what to expect in future episodes. With that said, the game does offer a pleasant gaming experience. For that, I give a 3.5. (The 0.5 is due to the bug where you can't move your box after you restart. I would have given a 4 otherwise.)