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.
"Tower Defense" was oddly enough trademarked by Com2Us in 2007 (in U.S., serial number 3442002) despite there being plenty of games with tower defense in their title by then. They have enforced this trademark on several occasions since, notably on Apple's platforms.
The first Tower Defense video game was released in 1990.
Parent groupsDefense game, Strategy
Related groupGame genre
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