It#s a nice Puzzle Concept. The Biggest"Issue" that I had during playing is: Why do I have to click on the Button? I mean, would'nt a Click on the Game anywhere would do the same work? I don't know how many Times I clicked on the Link over the Button -_-
Would be also interesting to add Animals which cant touch each other (I didn't played it very long, don't know if its already in :) )

not a fan it gets boring and repetitive

interesting concept. the sfx is a bit annoying though.

This is an interesting idea, and while I think I've seen something similar, it wasn't quite like this. So, props for an original idea. However, the level's difficulty progression is far too slow. I felt like each level was pretty much the same as the last. The only difference would be the metal bar switched sides, or maybe a new animal. You've coded the physics pretty well, and for what it is, the graphics aren't too bad either. All in all, a pretty decent job.

Not bad, the game distracted me for a bit, it definitely has potential to become popular like angry birds or candy crush if you continue to develop it. You might want to consider adding new power blocks or something, and also have the solid grey block be less common, I was able to not even try, relying just on that block for a few levels. Over all not bad, keep working.