What are tower defense games?

Tower defense games are a strategy genre where you place and upgrade defensive towers along a fixed path to stop waves of enemies before they reach the exit. You don't steer a hero around the map; you decide which towers to build, where to put them, and when to upgrade.

How tower defense works

Enemies travel a set route toward your base in waves that get harder as you go. Your job is to line towers along that route and thin each wave before it reaches the end.

Beating enemies earns currency, which you spend on new towers or upgrades between waves. Different towers counter different threats, so the puzzle is matching the right tower to what's coming.

Tower defense games we rank

Bloons TD 6 is pure tower defense from Ninja Kiwi, where you line towers along a path and pop balloon waves before they leak through. It's a paid download with in-app purchases on top, rated PEGI 3, and it holds a 4.8 average from 402,087 ratings.

Kingdom Rush keeps Ironhide Games' fantasy defense campaign narrow, sending waves down fixed lanes while you choose which towers to build and when to upgrade. The campaign starts free, which is part of why we rank it third among mobile strategy picks.

Kingdom Rush Tower Defense TD hands over a full kingdom-defense campaign for free and takes ads in return, and it plays without a connection. With 853,789 ratings at a 4.7 average, it's the most-reviewed pick in our offline games guide.

Where the genre blurs

Some strategy games borrow tower defense without being built on it. Clash Royale wraps tower defense around head-to-head card duels, where protecting your King matters as much as the deck you brought, which is why we file it under mobile multiplayer rather than pure defense.