Groups comparison

Defense game - 1980 to 2016
Any games where the primary goal is to defend something besides the protagonist (unless the protagonist's movement is uncontrollable by player).

Tower Defense - 1990 to 2024
Strategy sub-genre where player is limited to building defensive towers and has no movable defenses (or moving them is hard/detrimental) to protect something, and never goes on the offense.

defensegame
towerdefense
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