Slime Castle — Idle TD Games
Contains adsIn-app purchases
star
67.6K reviews
Everyone 10+
info
1M+
Downloads
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
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!
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Ratings and reviews
65.1K reviews
Dustin Hardin
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10 October 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.
92 people found this review helpful
Azur Interactive Games Limited
19 August 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!
Vanessa Shannon
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14 August 2024
Gameplay is almost identical to the ads (yay!). The biggest downside is after dying, the player starts back at the first level, have to start at 0 and upgrade everything again, and fight the same waves. There is a 3x speed after watching ads, but even with that it takes considerable time to reach the wave the player died at. Also, if you don't upgrade the right traits, you might not even make it to that wave. There are also a lot of "special purchases" which seem to streamline progress.
17 people found this review helpful
Azur Interactive Games Limited
15 August 2024
Hello! We are working on fixes, improvements and new content, and we hope that you will like the game's next updates.
Daniel Potts
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15 June 2024
I have never seen a tower defense game where you could miss shots. Biggest point of frustration. You should be able to pick up at the stage you died at instead of starting all the way back at 1. It doesn't sound too bad "oh I can collect a ton of easy upgrades if I go back to one" it's not worth it. Overall it's just not that good. Predatory in terms of in game purchases Tons of optional ads for everything ranging from free gold to free premium currency and it just falls flat.
97 people found this review helpful
Azur Interactive Games Limited
17 June 2024
Hello there! In Slime Castle, enemies can dodge your shots. To suppress their dodge abilities, make sure to upgrade your Hit Rate stat. In-game purchases are optional. Ads help us keep the game free-to-play. As for going back to the start each time you are defeated: we will be keeping your feedback in mind as we work on future updates.
What's new
1. Global-2 Adventure Card and Slime Skill unlock/advanced mechanism adjustments
2. Removal of the slime mutual exclusion mechanism among Expedition, Pickaxe Transport, and Travel Mode
3. Fixed known issues
2. Removal of the slime mutual exclusion mechanism among Expedition, Pickaxe Transport, and Travel Mode
3. Fixed known issues
App support
About the developer
AZUR INTERACTIVE GAMES LIMITED
support@azurgames.com
NIVIAN COURT, Floor 3, 16 John Kennedy
Nicosia 1087
Cyprus
+357 99 484236
