Defend the Castle: Card TD

Defend the Castle: Card TD

Deck-builder Tower Defense!

70 ratings
85 reviews
With Ads#168 in top-grossing Action
🎮 Games
🎬 Entertainment
💥 Action
🏰 Strategy
Free
In-App PurchasesWith Ads

Details

  • Released
  • Updated
  • September 29, 2025
  • July 23, 2026
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About

Build a powerful deck of tower cards to defend your castle from waves of enemies. Combine cards to create stronger towers, level them up, and strategize to overcome increasingly difficult foes and bosses. Engage in PvP battles or team up with friends in alliances.

Deck building
Tower card collection
Card fusion and leveling
PvP battles
Alliances
Timed quests and challenges
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What users say

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What's New in Defend the Castle

7.1.1

July 23, 2026

Massive PvP Rework: ∙ Adjustments to a variety of existing Towers and Monsters ∙ New PvP energy system ∙ New PvP battle layouts ∙ Improved deck power calculation ∙ Updated PvP matchmaking logic ∙ Revamped UI/UX ∙ New Common, Uncommon, Rare, and Epic Monsters ∙ And more! Complete Horde Overhaul: ∙ New special Zombies ∙ Three new five-path Horde battle layouts with 12 Tower slots ∙ New Danger Level mechanic ∙ Improved Horde scoring system ∙ Nicer visuals ∙ And more! Various other improvements and bug fixes.

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In-App Purchases

$5.99

Endless Deals C - Tier 11

Endless Deals C - Tier 11

Charts

Top Grossing

📈 168+7

Action games

This game rose +7 positions in Action games chart.

Last updated on August 10, 2026.

User reviews

New update, some things fixed

Raising to 3 star now. Most of my issues with the game have been resolved. The balance seems good, though levels are still impossible, I hope to advance once I get more of the card and fuse coins. It seems to drop cards and fuse coins more. I have a small amount now that I am banking till I get more cards. It seems pretty balanced now. The ratio of getting a higher star card and just a higher level same card is still an issue.

Now what I want to see.

Events- a must. Maybe some special monsters or an endless wave event. Maybe a special tower event where you get to use a tower that is themed.

PvP- needed, either you play as a team or play till someone loses.

New towers and monster- obvious and something that is happening.
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Response from developer

We're sorry to hear about your unbalanced gameplay experience. We recently released version 4.0.0 with gameplay balance updates for gameplay, rewards and progression as well as daily Quests and Horde Battles to allow for faster accumulation of resources to collect and upgrade towers. Come see if the game feels better and if not, send a support request through to https://smallgiant.aihelp.net/hc/account/4-Defend_The_Castle/en/contact-us

New update, same issues

It is super hard to get cards and Fuse Coins. Why would you make it 50/50 to get nothing? Especially at 4+ star? You take so much time to get the cards and coins, you combine, and you just get 1 card of the same level (meaning you lose a card and get nothing), or worse, a wild card. If I take 2 4 star cards, that may be in my decks but I want a 5star, and get a wild 4 star card, I just lost 2 cards from my deck and have nothing. You have to fix this. Give something other than just a slightly upgraded same level card or a wild card.

These are still an issue in the July update-Taunt golems are so over powered. Pair that with a fairy, auto win on level 2 and 3. A wave 2 golem is over 100k. Who thought that was fair? With the trident debuff, nothing can put out that much damage in the 2nd wave. Their hit level is so high, it then forces you to attack that monster, letting all the other monsters just walk through. You have to adjust the wave buff percents or the golem. This is the 3rd update you broke a monster. Delete the game if you want to keep your sanity. I wish I could report bad devs, this is one of them. They delete and pay for reviews. Use to be at 2 star, now at 3.3. Looks like they slowed down deleting bad reviews. I know one of mine was deleted and I had to write another.
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Response from developer

We're sorry to hear about your unbalanced gameplay experience. We recently released version 4.0.0 with gameplay balance updates for gameplay, rewards and progression as well as daily Quests and Horde Battles to allow for faster accumulation of resources to collect and upgrade towers. Come see if the game feels better and if not, send a support request through to https://smallgiant.aihelp.net/hc/account/4-Defend_The_Castle/en/contact-us

No more stacking!?!

What happened to the tower stacking? Now it’s almost impossible to win a round unless you spend real money to level up your towers and even if you use ones to slow the hoard down, it doesn’t slow them down like it used to. This used to be my favorite game but with it being impossible to have a real chance at winning a round anymore, I don’t even want to play it and I just got past level 200…if it’s not fixed to how it was, I’m going to be deleting the app. I’m not spending money because you want to change the game and try to force money being used over actually strategy. You’re forcing me to end my usage.
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Some suggestions

- Your new horde mode suffers from being too short. Enemies walk straight line and by the time you get any fun defense up, it’s over. Either bake a time increase into manually speeding up waves alongside the score multiplier or just increase it overall

- Fusing two max level cards of any rank should never produce a wildcard of that same rank. It punishes players who commit resources to level up cards and should be a guaranteed rank up.

- All gargoyles should have an effect for how hard they are to obtain. Storm Gargoyle in particular should have pushback.
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Encyclopedia

Please add an encyclopedia listing all towers, enemies and troops. When will you answer?

Developer apps

User experience

🐞

Reported Bugs

4 issues

Glitch in emblem quest

Bug

Missing number display on fire slimes

Bug

Crashes

Bug

Incompatible with older devices

Bug

Requested Features

9 requests

Longer waves per round

Feature

Ability to merge cards

Feature

Daily login rewards

Feature

Deck organization

Feature

Multiplayer

Feature

View resources

Feature

2x speed option

Feature

PVE ranking and PVP rewards

Feature

Ability to recycle or upgrade duplicate cards

Feature

FAQ

What is Defend the Castle: Card TD?

Defend the Castle: Card TD is a tower defense game where players build a deck of tower cards to defend their castle from enemy hordes. It features deck building, card collection, and fusion mechanics to create stronger defenses.

How do I get stronger towers in the game?

You can collect elemental cards to build versatile decks and combine tower cards to create unique and more powerful towers. Leveling up your cards also increases their strength, helping you to beat elite and boss enemies.

Is Defend the Castle: Card TD free to play?

Yes, the game is free to download and play. However, it does offer in-app purchases for game items that can be bought with real money. You can disable in-app purchases in your device's settings if you prefer not to use this feature.

Can I play with friends in Defend the Castle: Card TD?

Yes, you can play with friends in several ways. The game includes PvP battles where you can attack opponents and defend against their minions. You can also join or create an alliance to team up with other players to repel enemies.

What kind of challenges are available in the game?

The game offers timed quests and themed challenges that allow you to test your deck-building strategies. Successfully completing these challenges can earn you limited-time rewards.