Royal Defense: Invisible Threat

Full version game

$ 9.99 USD

Only $2.99 - use coupon NEW299

Become a part of an exciting story based on 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. 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! Build towers, earn money, collect crystals and upgrade your spells – the enemy shall not pass!

  • 40 different progressively challenging levels
  • Extensive magic system
  • In-game store, for various upgrades
  • Play Royal Defense
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Game System Requirements:
  • OS: 10.8/10.7
  • CPU: 600 Mhz (INTEL ONLY)
  • RAM: 512 MB
  • Hard Drive: 104 MB
Game Manager System Requirements:
  • Browser: Safari 4.0 or later
Royal Defense: Invisible Threat


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Reviews at a Glance

Royal Defense: Invisible Threat

0 out of 5 (0 ReviewsReview)
Average Rating:

Customer Reviews

Royal Defense: Invisible Threat 2.8 5 29 29
No loops holes like the first I loved the first one,you had to figure out the loop hoops but once you did the game was easy,not with this one tho,I tried the pause,but it did not work,so nothing left except,go and advance build up you strength and return for your gold stars,if you like tower games and have patience,then this is the game for you,it has more up grades than other tower games,spells and just over all fun,this is a must for my game collection. June 11, 2013
A lot of these reviews are misleading....this game is good if you played the first one A lot of people are jumping to conclusions about this game...first all, play the first one and if you are good at it and want something that is a few jumps in difficulty then this one is a good game. It is not as hard as some people are making it though. I am 45 min into it, around level 9 or 10 I think and its not that bad...just play and master the first one first like I have. Yes the invisable monsters can be a pain but if you invest in the radar tower it is not that bad either. Some people say this game is boring...its only boring if you don't like this kind of game....I hope they come out with more tower defense games because I'm beating these ones within a week of getting them. So try it before you judge it being a bad game...cuz it is a good game September 1, 2013
More of the Original This game is really a continuation of the last Royal Defence game. I highly recommend you start with that game as it will explain all the units/enemies abilities and weaknesses, where this game just starts off like you know those things already. That being said, this is a great tower game. If you liked the first one you will definitely like this one too. June 11, 2013
Very Good Tower Game The invisible enemies present a real challenge and require that you pause and upgrade frequently. It is also likely that you will have to use some gems to purchase upgrades to survive certain levels. Tough, but a very good game. Interesting levels which present different challenges. I could never beat one level; I always came up wither 1 or 2 lives short. You may end up cussing the game when you lose, but with a change of strategy you can replay and win. Except that last level. Stick with it and read the blogs. December 28, 2013
Strong recommend It is a little tricky to figure out what the towers do. Game could definitely benefit from an encyclopedia. But overall, it's great. Definitely recommend. June 12, 2013
Difficult but great Though this is one of the most difficult games to win at 3 stars per level, I loved the challenge! Did need a bit of advise from expert player though. (be aware of how you use yours "stars") RD games are the best TD, I loved this one and the first. June 29, 2013
Hard. Really hard. Did I mention it was hard? For those who, like myself, finished the first Royal Defense, you will look back on that experience as rather easy compared to this new version. I've played many TD games, this one is designed for you to fail, at least at first. Many people are complaining about the invisible monsters, and not without reason. After playing for a while, I believe it is possible to get three stars on each level, but requires some real grinding to get enough gems to buy the upgrades. You need the patience to replay levels many times to do this. Sadly, the game does suffer from poor help documentation. I would have thought that if the developers had listened to people's comments from the first version, they would have at least created a repository of some kind. Would not be a great effort to implement and the lack of it again in this new version kind of smacks of an attempt for quick turnaround for a buck. Still, I remain a fan of the game and have made the purchase. I do like the pursuit of achievements, even with the punishing difficulty and lengthy grind needed. June 12, 2013
The second Royal Defense This is the second in the series, and is quite a bit harder than the first. Would have appeciated a little more information on how to beat each level. There are invisible troops to kill, which took a while to figure out that you have to build satellite towers to make them visible. Normally don't give a "spoiler", but there was a lot of people going to the forums and asking how to kill them. You don't have the advantage of going back and repeating levels with upgraded weapons to achieve 3 stars. It is REALLY needed on this one!! If you are up for a challenge, this is a great game for you!!! I am the type that just doesn't give up, so I will be playing this one for a long time to get expert on every level!! Good luck everyone... June 11, 2013
Diminishing Fun This series brought new and refreshing strategies to the TD genre. I truly enjoyed the first.... however, they tried too hard to make the second either different or more challenging. Most of the game is very similar to the first. New stealth units definitely required tricky startegies to defeat them. Often 1 or more Spells are required to keep the level perfect at early waves. I would recommend focusing your offensive upgrades on the Dart Towers. They will be the cheapest and most powerful tower used in later levels as they can shoot/slow down both air and ground targets. But therein lies the problems of this game at later levels. I was able to get to level 12 of Wastelands, all perfects, effectively using just the Dart Tower. Some creatures are immune to either one or the other upgraded dart tower ammunition. In Wastelands I almost always had to sell those towers in the middle of the level and replace them with their counterpart as the monsters changed and were now immune to the ones I started with. Ok, no big deal I guess as that's what I spent my valuable gems for. BUT on level 13??? they mixed and changed the monsters so many times that I was constantly replacing towers. And even then it wasn't enough. I got so frustrated having to replace towers multiple times I gave up and stopped playing. Maybe I used the wrong strategy of tower upgrades with my gems??? But I wasn't interested in going back and upgrading all of the other towers just to find out. This is mostly a cool and challenging game, but the way they mixed monster types so much towards the end it's hard to decide whether to recommend it??? If you liked the first and have patience then you'll enjoy this one. August 10, 2013
More challenging than the first If you completed the first Royal Defense, you will like this one. Easy to earn $$$, but fewer spots to put up defenses that the first. June 13, 2013
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Royal Defense: Invisible Threat

Defend the fortress from trolls who have come to raid your lands! Build towers, earn money, collect crystals and upgrade your spells – the enemy shall not pass! Repel the aggressor!

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