The defense genre in mobile and browser gaming revolves around strategic protection of a point, area, or pathway from waves of oncoming enemies. These games, often called tower defense (TD) or base defense, challenge players to place and upgrade static units or structures along a set path to eliminate attackers before they reach their goal. The core appeal lies in careful planning, resource management, and adapting strategies to increasingly complex enemy types.
Accessible directly in a web browser or as a mobile app, these games are perfectly suited for short, engaging sessions. Popular sub-genres include classic fantasy TD, merge defense where combining units increases their power, and hero defense where a central character provides active skills. Their evergreen, puzzle-like nature and progressive difficulty curves make defense titles a staple of casual and mid-core gaming libraries, offering deep strategic satisfaction without requiring fast reflexes or complex controls.
