Slime Castle — Idle TD Game

Name: Slime Castle — Idle TD Game
Availability: InStock
Rating: 4.386138439178467 (67680 reviews)
Author: Azur Interactive Games Limited

Azur Interactive Games Limited

Contains adsIn-app purchases

67.7K reviews

PEGI 16

1M+

Downloads

PEGI 16

In-Game Purchases (Includes Random Items)

Learn more

About this game

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 slimecastle@redtailworks.com

Become a Slime Hero! Defend forest against human invasion in the idle TD game!

Updated on

Nov 9, 2026

Available on

Android, Windows*

*Powered by Intel^® technology

Events & offers

Ends in 1 day

Halloween: Four Spooky Activities!

Update available

Endless Dark Realm

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.

This app may share these data types with third parties
Location, Financial info and 3 others
This app may collect these data types
Location, Financial info and 3 others
Data isn’t encrypted
Data can’t be deleted

Ratings and reviews

65.2K reviews

r t

October 19, 2026

This is not an actual Tower Defense game, don't be fooled. Also it's extremely p2w, don't be fooled by the automated messages claiming its f2p, or "f2p friendly". The devs have antagonised their own player base for several months now, and it's looking like they are trying to sabotage their own game. Don't recomend you waste your time with it.

6 people found this review helpful

Azur Interactive Games Limited

October 15, 2025

Hello! Making in-game purchases only speeds up your progress, it's not the only way to get ahead in the game. There are plenty of other ways to earn in-game resources. So, if you're an active player, you can still compete with others. Good luck!

Edin Ismani

August 11, 2026

Hi everyone. started playing this game around december 2025 and the game was super fun that I spent well over 300 €. Game progress was ok, you had different set of items who were strong and you could progress in game, but then came the balancing update and it made this game so bad. now all you would want in this game is only 1 set of items which are worth it, the other 9 sets total rubbish after the balance. Do not get me wrong, support team was really really helpful for that only 2 stars.

3 people found this review helpful

Azur Interactive Games Limited

August 15, 2026

Hi! Thank you for your thoughts on game balance. We keep working on updates and new content for the game based on players' feedback, and we appreciate every opinion. We hope that you'll like future game updates!

Chris

August 17, 2026

The game itself seems fun, but I'm going to immediately delete this game due to ads. You can play many other games without ads or relatively few (optional) ads. Other games also have much cheaper rates for bypassing ads. 15 dollars a month just to have 2x-3x speed and to be able to skip ads infinitely is obnoxious. I wanted to give this game a chance, but they're too greedy. Avoid this game and support less greedy companies.

2 people found this review helpful

Azur Interactive Games Limited

August 20, 2026

Hello! Thank you for your attentive attitude to the economics of the project, we have accepted your feedback and will process it. We understand that advertisements can be irritating, and we're trying our best to minimize them as much as possible.