Ah, Tower Defense. Real-time strategy’s more passive cousin. Beginning life in gimmicky maps based around RTSes like Warcraft 3, the concept has since grown in into its own distinct stand-alone genre on just about every conceivable platform. While it maybe seem like many are shovelware dreck that floods mobile app stores, there are many excellent games on various devices that are well worth anyone’s time. Let’s take a look at some of the best of them. We also include many sequels and spin-offs, because they tend to learn from the mistakes of their predecessors.