Install D

The player can use 6 different types of defense programs (towers) at once, each one having 5 variations, for a total of 30 different towers. Some towers are quite unique, like the web portal which places 2 portals on the map that teleport threats between them and the proxy tower which force threats to visit the proxy before reaching the server (final goal). The game has a campaign of 40 maps, with 14 challenge maps unlocked as the player progresses. A survival mode is also available to test a player’s defensive capabilities.