Tower defense

Tower defense is a subgenre of strategy video games in which the player defends a territory, base, or path by placing defensive structures to stop waves of enemies from reaching a goal.

Tower defense is a subgenre of strategy video games in which the player defends a territory, base, or path by placing defensive structures to stop waves of enemies from reaching a goal. It is commonly treated as a subgenre of real-time strategy, though many games also include turn-based or hybrid mechanics. In Canada, the genre is popular across PC, mobile, browser, and indie game markets, but lacks a uniquely Canadian origin or identity.

Gameplay

Tower defense games generally ask the player to stop enemies from reaching a target by building defensive structures. Success depends on placement, timing, and resource use, with many games rewarding players with in-game currency for defeating enemies.

Genre classification

Tower defense is commonly described as a subgenre of strategy games and often linked to real-time strategy because many games play out in real time. Some modern titles blend in turn-based or other strategic systems.

Common mechanics

Typical mechanics include waves of enemies, fixed or semi-fixed paths, automated attacks from towers, and upgrades that improve damage, range, or special effects. Some games also let players alter enemy routes by placing structures to create mazes.

Origins and popularity

The genre became especially prominent in the early 2000s, with custom game modes and map editors helping spread tower defense design. It has remained a recognizable strategy format across PC, mobile, browser, and platform games.