A sequel, geoDefense Swarm, was released on September 14, 2009, and was listed by Time magazine as one of the best games of the year.

[1] An Xbox Live enabled version was released for Windows Phone on June 8, 2011.

As of the release of iPhone iOS 11, the game was removed from the App Store because of incompatibility.

Enemies (called Creeps) move towards the player's lives and towers must be placed around the map to appropriately prevent and destroy their progress.

Levels are in the form of these paths with varying limits on tower prices, enemy occurrences and lives.