Interesting game
While not the best game out there, this was still pretty fun to play. The fun in it is mostly how simple it is. All you have to do is move these crates over and over. I am glad you do not have to work hard to move all the crates as they each can be pushed off. It's interesting to see the different variety of sizes you get. You really have to watch out for whatever is coming out next from the top. What's also cool is how you are able to turn the music off.
It's fun at first, but the tune gets a little annoying. It's still a well done game even if it did not have the most detail. I suggest you probably putting in more of a background and maybe more designs in the boxes. The gameplay itself really has little that is wrong with it. It was also nice to throw in powerups to make you faster.