Defense games challenge your strategic planning as you build, position, and upgrade defensive structures to protect your base against increasingly powerful waves of enemies. Tower defense is the core mechanic - place towers with different attack types along enemy paths, then watch as your defenses engage approaching threats. Choosing the right tower placement, upgrade priorities, and ability timing creates surprisingly deep strategic gameplay. Archer towers rain arrows on distant enemies, magic towers deal area damage, and slow towers help control enemy movement speed. Each wave introduces tougher enemies with more health, armor, and special abilities that force you to adapt your strategy. Some defense games feature maze-building mechanics where your tower placement creates the enemy path itself. Castle defense games put you on medieval walls repelling siege armies. Modern defense games feature military technology against alien invasions. Resource management adds another layer as you balance spending between building new towers and upgrading existing ones. Boss waves punctuate the action with massive enemies that test your entire defensive setup at once.
