Idle Fortress Tower Defense (Updated)

The Game

Idle Fortress Tower Defense is a mobile game by DD Games. As suggested by the fairly generic name it’s a simple game with a simple premise – upgrade your fortress and defeat an onslaught of enemy waves. The concept of an idle tower defence game was something that intrigued me, however I was a little disappointed that this game isn’t really what I would call an “idle”.

The game has quite a typical mobile cartoony art style that works quite nicely. The core gameplay loop is doing runs in which you see how many waves you can last. You can upgrade your tower heavily throughout the battle with silver coins that you earn. During your run you will also earn gold which can be used to permanently upgrade your tower at the factory or research lab. Every 10 waves a buffed up boss will also appear, providing a significant challenge. There are plenty of upgrades to unlock including a variety of shot types, satellites, health and defence upgrades.

Worth it?

The game is free to play and still in development. A lot has changed in the game since it first came out. Ad watching is there to increase the amount earned from a run, revive you if you die and generally something you can choose to do. I wouldn’t really call this an “idle” game due to the fact that you actually have to be quite active when doing a run and being selective of what gets upgraded. The only idle element is the gem mine which awards you gems every so often. You can also perform research tasks while offline.

The game is quite good for active play sessions, which can last anywhere between 5 and 15-20 minutes depending on how many waves you manage to get, as you progress there are other ways to speed up fights. The game has become quite monetised with various subscription or purchase options. Overall it’s a fun game and is has built on a solid base. It would be nice to know when the second area is actually unlocked as it feels like it’s quite far away and can be a bit of a struggle to reach. The game is actually quite challenging and ramps up its difficulty quite early on.

There isn’t that much in the way of idle mechanics, perhaps if the tower fought off waves with it’s permanent upgrades and restarted every time it died or some sort of auto-buyer it could be more of an idle (while afk). Another option would be some sort of idle farms or mechanics that tick while you are away from the game. Either way as an active-play game there’s a good amount to get stuck into, it would be nice to see more cards and card slots and possibly even more upgrades, secondary turrets, areas, enemies and maybe even some more truly idle mechanics.


  • Focus on upgrading gold and coins per level as early as possible – coins per level are no longer available, but gold is still quite useful but you can and should now pour more into dodge chance, multishot and attack. You can still get coin per wave bonus via research so do boost it there
  • Life-steal has been nerfed somewhat but still useful for getting past bosses
  • Regeneration is generally useless as the tougher enemies will just wipe you out
  • Unlock all card slots and cards asap, keep purchasing and upgrading cards with your gems
  • Get the second research tab and run longer research tasks in there (thanks to cory for that one)
  • The maximum game speed multiplier is 3x
  • Try to unlock all attack perks as the last one is an instant kill shot chance, paired with a high attack speed this can be very useful
  • Claim free coins, gems and research shards every 4 hours from the top of the home page
  • Lookout for the little creature with the bag full of gems that occasionally appears – tap it to gain a few gems
  • Shield spawn time is quite quick and easy to max out

Useful Links


7 thoughts on “Idle Fortress Tower Defense (Updated)

  1. cory March 20, 2023 / 5:27 pm

    can we get an update bc all the new content and upgrades being taken away, or added, or moved


    • olivlaytchev March 20, 2023 / 6:02 pm

      I have done a small update today, I will play a bit more these days to add more if necessary. Please feel free to share any of your thoughts or tips for the game.

      Liked by 1 person

      • cory March 22, 2023 / 2:35 pm

        Well i feel like getting the second research slot is beneficial but not necessary, it only helps you research more stuff, at a faster pace, you claim to not bother with it, but you can put a high consuming time one in the second or third while you put a faster one in the 1st. Also i tend to go towards more money when i start my rounds and then i get the upgrades to fight better, this way i make more gold while i do my waves.


      • cory March 23, 2023 / 3:38 pm

        I also have a few combos i like to share: attack range paired with attack range damage bonus, and attack damage upgrades help deal with enemies from farther away. another one is attack speed paired stun chance, time and slow chance and power due to if you attack fast enough you can stun them repeatedly and slow them. also if you have bounce, that can go with multi shoot and multi target to deal damage to a great amount of enemies.

        Liked by 1 person

      • cory March 23, 2023 / 3:43 pm

        I have some research that I think should be done first or when available: Gold bonus: get more gold when you get it, coins per 100 earned: you get even more coins to help you progress into further waves, Coins per level (I can still see it in research): this helps you when you need some bonus cash to help.


      • cory March 23, 2023 / 5:00 pm

        I’m glad i could help you develop this page, i can help you more out when i get home from work, also how much can you add to this page? is there a cap on how much or can you go infident? i can give loads of tips but i don’t know how much space you have to work with.


      • olivlaytchev March 29, 2023 / 5:47 pm

        Hi Cory,

        Apologies for the delayed response – we can add as much or as little as you like – please share anything you’d like to share with the community and I’ll happily add/credit you.

        Really appreciate your help on fleshing this one out.



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