What's New

- 10 new levels for chapter V

- now you can build and upgrade towers for gems

App Description

The castle needs a hero – hordes of trolls are surrounding it!

Build towers, save money, learn spells, and keep the enemy away! Follow the exciting story of the dwarven kingdom's eternal struggle against the troll hordes, who want only to crush the dwarves and claim their territory. To defeat these monstrous hordes, you must construct defensive towers and units and learn to wield powerful spells. Tap anywhere you like for a handy pop-up menu listing all the units and structures that can be built in each location. Tap existing structures to see how you can upgrade your forces with powerful improvements! All your towers and units have specific stats: Damage, Fire rate, Damage radius, Damage type, as well as various other features, such as Enemy Slowdown and Damage Over Time. Each level also brings new units and structures to help you fight the troll menace. You’ll never be lacking for new and exciting ways of decimating those nasty trolls!

iPhone Screenshots

(click to enlarge)

Royal Defense: Invisible Threat screenshot 1 Royal Defense: Invisible Threat screenshot 2 Royal Defense: Invisible Threat screenshot 3 Royal Defense: Invisible Threat screenshot 4 Royal Defense: Invisible Threat screenshot 5

iPad Screenshots

(click to enlarge)

Royal Defense: Invisible Threat screenshot 6 Royal Defense: Invisible Threat screenshot 7 Royal Defense: Invisible Threat screenshot 8 Royal Defense: Invisible Threat screenshot 9 Royal Defense: Invisible Threat screenshot 10

App Changes

  • February 09, 2013 Initial release
  • February 11, 2013 New version 1.0.1
  • February 22, 2013 New version 1.0.2
  • February 28, 2013 New version 1.0.3
  • March 04, 2013 Price increase: $0.99 -> $2.99
  • March 11, 2013 Price decrease: $2.99 -> $0.99
  • March 12, 2013 Price increase: $0.99 -> $2.99
  • March 21, 2013 New version 1.1.0
  • April 05, 2013 New version 1.1.1
  • April 06, 2013 New version 1.1.2
  • April 09, 2013 Price decrease: $2.99 -> $0.99
  • April 10, 2013 Price increase: $0.99 -> $2.99
  • April 28, 2013 New version 1.1.3
  • April 28, 2013 Price decrease: $2.99 -> $0.99
  • May 06, 2013 New version 1.1.4
  • May 14, 2013 New version 1.1.5
  • May 23, 2013 New version 1.1.6
  • June 30, 2013 Price decrease: $0.99 -> FREE!
  • July 01, 2013 Price increase: FREE! -> $0.99
  • October 21, 2013 Price decrease: $0.99 -> FREE!
  • October 29, 2013 Price increase: FREE! -> $0.99
  • November 08, 2013 Price decrease: $0.99 -> FREE!
  • November 12, 2013 Price increase: FREE! -> $0.99
  • May 15, 2014 Price decrease: $0.99 -> FREE!
  • May 18, 2014 Price increase: FREE! -> $0.99
  • February 16, 2015 Price decrease: $0.99 -> FREE!
  • March 01, 2015 Price increase: FREE! -> $0.99
  • May 18, 2015 Price decrease: $0.99 -> FREE!
  • May 24, 2015 Price increase: FREE! -> $0.99