A premium tower defense game!
Prepare Yourself For War! The Blocks are invading!

Defend from hordes of Blocks with your mighty BIT heroes! armed with bows, axes, cannons and even frying pans.

Hours and hours of in-depth addictive gameplay:

* 20+ characters with a variety of upgrades and classes.
* Complete over 100+ quests and earn tons of rewards to upgrade your Heroes.
* A wide range of enemies and bosses.
* Fight in over 15 beautiful environments from Grasslands and Harsh Volcanoes to Mysterious Caves.
* Rain fire upon your enemies with powerful abilities.
* Endless mode after completing a level.
* Compete against others with your own strategies to land the largest scores on the Leaderboards.


Defend The Bits is premium paid game. However, some extra items can be purchased for real money.
In app purchases are not necessary and are only for those who want to speed up their progress.

Defend The Bits was developed by PlaySide, the developers behind the Editors’ Choice title “Catch The Ark”, Icy Ropes, Monkey Ropes, Lego Batman, Batman v Superman, Spongebob: Sponge on the Run, and Bouncy Bits..

Let us know what you would love to see in our next update. Visit us at :

What's New

Version 1.2

Critical Bug fix on Quest progression and Upgrades.

Ratings and Reviews

4.7 out of 5

45 Ratings

45 Ratings

Best tower defense of 2017


Good balance of easy and hard, particularly the hard. The team has done a great job, kudos.

Don't be stingy - spend $10-20, pay the team, and buff up your towers. The later stages of every level, and the later levels are incredibly enjoyable with tower upgrades, and probably too hard if you don't.



Very enjoyable, difficult enough to progress through over time, and no need for any micro transactions after the initial buy, perfect for anyone who likes tower defense games!

Love the Game...BUT


Great game, however I'm experiencing tower unlock bugs and quest bugs.
I've 3 stared Woodland Overpass yet that tower remains locked, and I've upgraded the Viking 3 times yet that quest remains locked.
Other than that I'm really enjoying the game.


PlaySide Studios PTY LTD
155.2 MB
Requires iOS 6.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 9+ for the following:
Infrequent/Mild Cartoon or Fantasy Violence
© PlaySide Studios PTY LTD
In-App Purchases
  1. Pile of Gems $4.99
  2. Small Bag of Gems $2.99
  3. Chest of Gems $19.99


  • Game Center

    Challenge friends and check leaderboards and achievements.

  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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