It took me a while to get the hang of it, but eventually I did. I like the idea to have movable structures in a tower defense - it keeps you engaged, which is cool for the genre. Eventually, though, I got to the point where I had so many cakes throwing cherries that the rats would die instantly when spawning. Having increased rats, or tougher/faster rats over time would help the longevity. Still, overall, very nice!