Very solid tower defense game! I really liked being able to merge different canon together, i think it gives a lot of replay value to try them all! The only downfall are the bugs caused by the enemies going too fast, which is too bad.(sometime some of my towers just wouldn't activate at all) It would have been fun to also have an indication or some sort of tutorials, since i had to guess that merging towers and purchasing a more powerful version of each tower was possible. Overall, pretty fun game!