Are you looking for an immersive action RPG tactical battle simulator game? How about experiencing the best of idle defense against enemy invasion? With this amazing survival battle game, you get to experience a realistic defense simulator featuring cute animals.

As one of the best TD games, this survival battle game is designed to keep you entertained for hours every day. Play every enemy invasion level to polish your tactical battle simulator skills and stay on top of your performance.

Play 33RD – Random Defense War, Animal Battle Arena now!

Defense Simulator Idle Game
Are you ready to fight one of the most challenging action RPG tower defense battles available online? Brace yourself to face the most challenging survival battle of all time! Create your team of animals and wizards and fight in battles!

Stop the monsters to gain victory in the tactical battle simulator. You will face 33 difficult tower defense enemy invasion types, and you must fight all to win!

Play Single, Co-op, and Duel modes!
Animals are summoned randomly! So are the monsters, buffs, and even the placements!
Test your luck in this game with multiple possibilities!

Features of 33RD – Random Defense War, Animal Battle Arena

■ Single Tower Defense Simulator Mode
Clear over 100 stages of survival battle against enemy invasion and receive rewards to upgrade your armor in action RPG levels.

■ Duel Mode (1v1 PvP) for Idle Defense
Strategically create your team of animals and challenge players from across the world in real-time tactical battle simulator duels for your victory!

■ Co-op Tactical Battle Simulator Mode
Work together with your friends in defense simulator to stop the swarms of monsters and beat the highest score in idle defense TD games.

■ Special Modes
A dungeon mode that challenges you to the end using various spells. Chaos co-op mode only for advanced players on the weekend.

■ Cute Tower Defense Animal Characters
Collect over 50 unique animals to check their abilities and grow them. Stay on top of your idle defense performance and have fun!

■ Unlock Magical Wizards
Train your wizards and learn new skills! Enter the battle arena with full defense simulator preparation and fight against the enemy invasion.

■ Simple Controls for TD Games
Easily summon, merge, and upgrade your monsters with just your finger!

Download and play 33RD – Random Defense War, Animal Battle Arena today!

A payment will be charged to your iTunes account when the subscription begins, and it will auto-renew unless turned off at least 24 hours before the end of a subscription period. Renewal payments will be charged within 24 hours before the end of the subscription period, with the same price and payment schedule for the subscription you selected. You can manage your subscription and turn off auto-renewals in your device account settings.

Please contact us at with questions, concerns or suggestions!

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Terms of Service:

A network connection is also required.
By installing this game you agree to the terms of the license agreements.

What’s New

Version 2.2.1

•Bug fixes and performance improvements.
•For more details, please refer to the in-game announcement.

Ratings and Reviews

4.7 out of 5
303 Ratings

303 Ratings

Fishbeta ,

Pretty fun, with some problems

Fun game, with plenty of customization and interesting gameplay— the only thing that throws me off a bit is how punishing co-op seems compared to the two other modes. Especially when you’re paired with what seems to be almost entirely bots; it’s incredibly hard to get to wave 10, let alone past that. Could use a bit more information on bosses/enemy types too— didn’t realize one could take away units until I had seen it several times.

Drgasmo ,

Random fun with issues

The core gameplay is fun, very RNG dependent but with the right team of defense towers you can progress and learn. However the Gatcha system is my main complaint... it seems to not only return the desired tower “cards” used in upgrading your towers/gaining new ones. But also the very currency you spend to open said gatcha at a extremely reduced rate. If I spend 500 gold (which without bonus rewards can take a looooong time to earn) for a 3 pull gatcha instead of getting 3 tower cards you are likely to get mayyyybe 1 new tower card and 2 cards of less than 50 gold (combined) back. Same goes for the token boxes. This feels like a ripoff mechanic and devalues the gatcha system quite a bit. The gem pull works the same way. You are better off just saving your gold and gems and buying directly from the shop. Plz remove currency from the gatcha system... we can earn that naturally.

Minolion ,

Fun game better before update.

An update to co-op for “more fun” has completely ruined any progression. It is so difficult that my team of leveled up legendaries can barely last past wave 10. The reward averages 5 coins which is abysmal compared to the cost of upgrades and shop items. Subsequent updates to “balance gameplay progression” has changed nothing. Each wave has monsters with HP that sky rocket. Summoning is too expensive to deal with the increased amount of high Hp monsters and you cant kill enough to upgrade damage during co-op gameplay.

Until the co-op is fixed, I cant find myself investing in this game. I have no interest in pvp as I play this with friends. I won’t be recommending this game now because of the nearly impossible to play co-op. No more fun.

I suggest lowering the monster/boss HP in co-op, increasing the rewards, or increasing the amount of points gained when defeating them.

App Privacy

The developer, Wondersquad, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Contact Info
  • Identifiers
  • Usage Data

Data Linked to You

The following data may be collected and linked to your identity:

  • Contact Info
  • User Content
  • Identifiers
  • Usage Data

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

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

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