Fight off hordes of monstrous mutants created from a strange cataclysmic event in the new tower defense game, Prime World: Defenders. Join a group of exile treasure hunters who have ventured into the capital of an ancient empire, vast with mystery and danger.
User reviews: Very Positive (606 reviews) - 86% of the 606 user reviews for this game are positive.
Release Date: Jun 5, 2013

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Recommended By Curators

"What did the first tower say to the second tower? "This map ain't big enough for the both of us." Ahu-hu-hu-hu...ahem."
Read the full review here.


"Prime World: Defenders is a must play for any tower defense enthusiast."

"Nival has nailed the core concepts of the genre."

"Prime World: Defenders is a fantastic game with an astounding amount of content for the price."

Update Notes

Prime World: Defenders has just been updated to Version 1.1 with tons of new free content - New Towers, Spells, Monsters, Maps, Heroic mode, Endless mode, reworked interface and balance tweaks based on your feedback!

Also, Steam Trading Cads!

About This Game

Fight off hordes of monstrous mutants created from a strange cataclysmic event in the new tower defense game, Prime World: Defenders. Join a group of exile treasure hunters who have ventured into the capital of an ancient empire, vast with mystery and danger.

Prime World: Defenders merges classic tower defense gameplay with collectible card mechanic. Your towers, your spells, your traps - all are magic cards, that you can collect and upgrade. You'll have to develop your own strategy, because you'll get your random set of cards after each battle.

Freeze, burn, poison, explode and slash countless enemies that will try to stop you from gathering artifacts of old kingdom. Choose your cards carefully, play them strategically and expect some heavy resistance along the way – from small and almost harmless mutated fungi to powerful giant goblins and nagas.

Did we mention? In addition to story-driven single-player campaign Prime World: Defenders has randomly generated missions, newly added endless mode and New Game Plus!

Key Features

  • A mix of tower defense strategy with collectible card mechanics!
  • No micro-transactions or additional payments!
  • Random cards drop means different strategy for every player!
  • Several game modes, including heroic mode and two special endless maps!
  • Upgrade and mix cards for maximum destruction!
  • Custom deck lets you pick perfect cards for each mission!
  • Perk system for your hero!
  • Story-based campaign with 23 missions!
  • Mission generator offers infinite replayability!
  • Enemy buildings in game heal and buff attacking creeps!
  • 24 towers, each with up to 25 upgrades!
  • 13 magic spells that can be upgraded too!
  • 38 types of enemies!
  • Bosses, mini-bosses and huge bosses.
  • Flying battleship!

System Requirements

Mac OS X
    • OS:Windows XP SP2
    • Processor:2.4 GHz double core
    • Memory:2 GB RAM
    • Graphics:GeForce 9500 GT or equal
    • DirectX®:9.0
    • Hard Drive:1500 MB HD space
    • Additional:Please note that Unity engine might be detected as virus on some Windows 7 64 bit systems with antivirus software
    • Additional:Please note that Unity engine might be detected as virus on some Windows 7 64 bit systems with antivirus software
    • OS: OS X 10.6.6 or later
    • Processor:2.4 GHz double core
    • Memory:2 GB RAM
    • Graphics:GeForce 9500 GT or equal
    • Hard Drive:1500 MB HD space
Helpful customer reviews
9 of 12 people (75%) found this review helpful
10.8 hrs on record
Posted: June 8
This game really feels like a free to play game stripped of all it's microtransactions. You might think that sounds like a good thing but what is left is a confused and horribly unbalanced game.

I spent my first 8 or 9 hours breezing through the game at a steady pace before hitting a brick wall of challenge which is insurmountable without resorting to endless grinding. Your towers come in the form of cards. You need to collect several of the same cards to upgrade them and progress however the only way of obtaining cards is by finding them at random or by purchasing them with in-game credits. You can't choose which ones you buy with your credits though, that is also left to chance. You'll soon run out of credits though and In a freemium game you would be able to purchase in-game credits to top up if you wanted, in this game however, the only way to earn credits is by grinding. Grinding can often be fun in a game, here it is so ineffective that it feels like an utterly pointless endeavour. You grind away hoping to be rewarded with the cards you need to upgrade and progress yet all the end of level rewards feel about 3 levels behind where you need them to be, meaning the cards you want, the cards you NEED, rarely come up. By the time you've fully upgraded a few towers the game ramps up the difficulty and they are rendered ineffective. You need to upgrade the new towers. Your magic abilities are absolutely useless, the fuse and evolution function is over complicated and there are frankly just too many towers with too many different enemies with the same levels rehashed over and over. It's a mess to be honest and the in-game currency, leveling up system along with the grinding nature of the gameplay and 'daily rewards' and 'special offer's' on items all scream freemium. Yet this isn't a freemium game, so it's all a bit redundant.

All in all then Prime World Defenders' as a game is basically thus: Want to obtain more towers? Grind. Want to unlock new abilities? Grind. Want to upgrade your towers so you can beat the level and progress? GRIND. Just don't expect grinding to get you anywhere.
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5 of 6 people (83%) found this review helpful
43.0 hrs on record
Posted: September 30
Prime World Defence
Rating: 7.5/10
Overview: Isometric Tower Defence

The Good:

+ Nice Detailed Graphics

+ The game features solid tower defence mechanics. You have tower and magic cards and you can only select a handful before each level. You can collect new towers and magic by completing levels and/or purchasing them in the shop using in-game currency. If you have two or more of the same tower cards you can combine them to increase the stats which also allows you to upgrade the them in battle. You can also further increase the stats of towers and magic by using any unwanted cards and combining it with the cards you want to upgrade. All of this leads to a somewhat addicting quality of the game of completing levels and collecting tower and magic cards and making them stronger as you play.

+ Variety of different towers, enemies and levels. Typical of any tower defence game, certain towers are more useful in certain situations than others, some towers can only target land while others can only target air etc. Enemies are pretty typical as well, you have groups of easy to kill enemies, slow but hard enemies and everything in-between. Its very well done and strategy is required to make it through the level but if you've played tower defence games before nothing here should surprise you.

+ Upgrading towers and magic is very rewarding

+ Permanent passive upgrades used with in game currency to further increase stats and bonuses

The Average:

There is a story but it really isn't the main selling point of the game. It certainly doesn't take anything away from the game but it doesn't add anything to it either. You could easily skip the story and nothing of value would be lost.

I found the levels to be well done but also very standard. Compared to other tower defence games in the market it seems like a real missed opportunity to try some creative things in each level. I wish the levels got more complex in terms of enemy paths, in most of the levels you have very little control in how the enemies reach the end. In most of the levels, especially in the beginning, everything is pre-determined especially enemy paths and tower placement.

The game has some bugs but nothing that ruined the game for me

Lacks different game modes and options present in other tower defence games

The Bad:

This game requires significant grinding in order to advance. If grinding out levels is not your thing then you should avoid this game at all cost. In order to complete some of the more difficult levels you not only need better towers but you also need to level them up. The tower and magic cards you get for completing a level is randomized which means it could be awhile before you finally get the tower card you need to upgrade it. This should not be surprising once you realize there is a free version that has micro transactions to speed up the grinding process. The free version has also received a lot more updates than the steam version.


I've played a lot of tower defence games and I put in a lot of time with this one. Its very well polished but other than its upgrade system it doesn't really provide anything new to the genre. The more I played the game the more I realized just how 'safe' it was in terms of its design. The game is lacking in game modes which hurt it and the game can start getting frustrating when you reach a level that becomes way too hard to complete without grinding. Most people who are not tower defence enthusiast would probably stop playing at this point. If you love the genre than this is a game worth checking out.
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3 of 3 people (100%) found this review helpful
34.1 hrs on record
Posted: July 19
A surprisingly decent tower defence game.

Although the sound and graphics scream mobile port, unlike some, it has been balanced well so that it doesn't feel like you are grinding pointlessly in the absence of microtransactions (looking at you, Antisquad).

The diverse maps, enemies and towers ensure plenty of variety, and the card-based tower collection and crafting makes even a quick match feel worthwhile.
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1 of 1 people (100%) found this review helpful
5.9 hrs on record
Posted: August 10
I only recommend on sale.

The game is pretty decent for a TD game but lacks levels and requires you to grind to upgrade and unlock new cards/towers. Could have been great but some will hate the grind.
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1 of 1 people (100%) found this review helpful
32.1 hrs on record
Posted: October 26
A rather difficult and tedious Tower Defence game.
Does it mean that it's bad? No ofcourse not.
I enjoyed it quite alot. Lots of grinding required but it really helps you move forward so it's not pointless grinding to the point where you just become bored.

A big diversity in towers, and while having completed the main game, I have yet to unlock all towers or fully upgrade the ones I have. Also, the types of towers are very unique for as far as my experiences goes in Tower Defence games.
There aren't that many enemies but they all are different and each type has unique 'abilities' and strategies that are required to beat them.

If you enjoy Tower Defence games that are rather difficult but also very satisfying when it comes to grind and strategy, then this is a good pick.
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