Slime Castle — Idle TD Game

Slime Castle — Idle TD Game

Azur Interactive Games Limited
★★★★★ 4.5 Strategy v3.2.6 1,000,000+
Verified Safe & Direct
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Slime Castle — Idle TD Game Screenshot 1Slime Castle — Idle TD Game Screenshot 2Slime Castle — Idle TD Game Screenshot 3Slime Castle — Idle TD Game Screenshot 4Slime Castle — Idle TD Game Screenshot 5Slime Castle — Idle TD Game Screenshot 6
Version
3.2.6
Downloads
1,000,000+
Updated
Jul 6, 2026
Developer
Azur Interactive Games Limited
Category
Strategy
Content Rating
Everyone 10+
Package
com.redtailworks.slimetd
Platform
Android

Download Sources

Device Configuration

Split APKs Installation Guide

Some apps are distributed as Split APKs (multiple .apk files packaged together) to optimize resources. Standard Android installers cannot open them.

1. Download Split APKs Installer (SAI) from Google Play Store.
2. Download the app archive (.apks) using the download sources listed above.
3. Open SAI, click "Install APKs", choose the downloaded archive, and click Install.

What's New

1. Added limited-time Relic Draw event.
2. Added a new Relic set: Demon Incarnation.
3. Added SSS Special Element Slime Noxraith.
4. Optimized claim restrictions for guild objective tasks.
5. Fixed known issues.

About this app

The bad humans are invading the mysterious forest! The slime kingdoms in the forest are facing a tremendous crisis!

As a slime chosen by the Slime Sage, you can enhance your abilities through battles, collect legendary equipment, utilize powerful skills, defeat waves of terrifying enemies, and safeguard the peace of the forest.

Once you are defeated, come back stronger!

Slime Castle is a role-playing idle tower defense game.

Players could enjoy an excellent role development system, countless powerful weapons, and several impressive battle scenes.

==== Game Features ====
-Auto-battle system with simple idle clicker gameplay. Enjoy a delightful time!
-Many distinctive maps and different enemies with unique skills. Explore more secrets of this world!.
-Flexible and diverse upgrade system. Build your exclusive fortress!
-Collect mighty equipment and level up the adorable slimes. Experience an extraordinary adventure!
-Abundant free rewards to claim. No need to worry about gold anymore!
-Set battle strategy by combining fortress, equipments, and control enemies. Find the optimal methods to defeat your enemies!

Now let‘s start the epic idle adventure and embark on the path to become the greatest Slime Hero!

Experienced a problem? Got a suggestion? You can reach us at [email protected]

User Reviews

Dustin Hardin Oct 10, 2025
★☆☆☆☆

Update: They recently changed the mini games to be much more difficult so that they could sell their new mini game passes. I recommend not playing 🙏 Not F2P friendly. Decent fun for outrageous prices. Want a better (or new) character? You need to drop more than $30 for each one. There is only one high-ranking slime available for F2P players. The pull rates for upgrades are incredibly low considering the price they want you to pay.

Dyandrea Phoenix Oct 5, 2024
★☆☆☆☆

The ads in the game are so frustratingly annoying. There are ads for everything, including increasing the level's speed to 3x. This would be fine if the ads weren't so extremely sensitive that you are almost always guaranteed to accidentally click on the ad, instead of closing it out. And if you do accidentally click on the ad and get taken out of the app, it will restart entirely and you do not receive any of the level goodies, which is more irritating when you are halfway through the level.

Kate (Demontoastie) Jan 21, 2025
★★★☆☆

Edit; Ads work maybe 15% of the time, which is INCREDIBLY frustrating as ads are 99% of how you can progress at a reasonable rate. I've been stuck at the same area for close to 3 months now because ads stopped working and progression is so slow without the boosts. Honestly love this game. While there 'isn't much to do', this type of phone game has a charm a lot have lost. I hope while the game continues to grow and change, it doesn't lose that simplicity.

Fergydclown Jan 25, 2026
★☆☆☆☆

This game does what a lot of new age phone games do. The majority of the time the after you watch an ad the game will crash resulting and result in no reward. The game acknowledges this by saying "ads not ready," when you return to the game to try the ad again. The other issue with this is you never know which ad is going to return you to the game or crash it. I dont mind watching the ads, its the not being rewarded for doing so that leaves this game at a 1 star. The gameplay is actually good.

How to Download Slime Castle — Idle TD Game APK

  1. Enter the package name com.redtailworks.slimetd on the APK Downloader.
  2. Select your device architecture (ARM64 recommended for modern devices).
  3. Click Download to get the merged APK file.
  4. Transfer and install the APK on your Android device.
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Security & Signature Verification

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Location Special Access
  • approximate location (network-based)
  • precise location (GPS and network-based)
Wi-Fi connection information Basic Access
  • view Wi-Fi connections
Other Basic Access
  • view network connections
  • full network access
  • control vibration
  • prevent device from sleeping
  • Google Play license check
  • receive data from Internet

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