Very cute little game! I liked it, kinda like Pipe Maze without the ability to fail no matter how bad the pieces I get are, and with a lot of different pieces to choose from. That said, the upcoming pieces were tucked away so far into a corner I didn't see them until the third stage or so, and often forgot they were there at all. Having to press a key every time I wanted to move a tile also made it troublesome when I wanted to move far across the screen or put in my name for the highscore.
But the biggest problem was the stage clear animation. There's no way to speed up the bunny's walking, and it doesn't move particularly fast, so in a way you get punished instead of rewarded for making a long path! I ended up prioritizing short paths just so I wouldn't have to wait as long; I think having some way to speed up the bunny (pressing start, maybe?) would alleviate this problem.
Finally, the border was adorable, so I would have liked to have it at smaller resolutions too! Overall a great job, and would enjoy playing a longer version!