Taking place on a hex grid, the main gameplay elements return from geoDefense, including the tower types and economy system. Additional complications to certain levels include multiple sources of creeps, and multiple exits to defend.
One additional tower type, the Thumper Tower is added which pulses creating shockwaves which damage nearby enemies.
The game initially shipped with 30 levels split over three difficulties. Subsequently in game purchases have allowed for 11 additional levels.
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