The towers in this game are strangely incompetent. The cheapest type perishes in one hit and barely does any damage. Only the ranged towers actually do enough damage to make a difference, and they are quite expensive. In addition, the towers can only attack in one direction, meaning if an enemy happens to spawn in front of a gap, then you are guaranteed to lose crowns. Also, the currency (blood) must be manually collected by clicking on it, and if you aren't fast enough it will disappear. Once a tower dies, you can not place a new tower where the old one once stood. Also, the "music" is repetitive and annoying.