Castle Defense Online
Castle Defense Online Summary
Castle Defense Online is a ad-supported, with in-app purchases Android app in Strategy by Black Hammer. Released in Apr 2020 (5 years ago). It has about 1.4M+ installs and 25K ratings with a 4.01★ (good) average. Based on AppGoblin estimates, it reaches roughly 18.1K monthly active users and generates around $<10K monthly revenue (34% IAP / 66% ads). Store metadata: updated Feb 19, 2026, version 2222.
Recent activity: 1K installs this week (3.7K over 4 weeks) showing steady growth , and 11 new ratings this week View trends →
Data tracking: SDKs and third-party integrations were last analyzed on Mar 1, 2026. The app's network data flows (API traffic to/from the app and its SDKs) were last crawled on Oct 18, 2025.
Store info: Last updated on Google Play on Feb 19, 2026 (version 2222).
Castle Defense Online was last scanned for SDKs 2026-03-01. Below is the overview of third party companies detected in the app. The full list of raw SDKs, app permissions and unknown SDKs is available here.
Google
Unity
Kotlin
AdMob
Firebase4.01★
Ratings: 25K
Screenshots
App Description
The game that falls in love :) Real-Time Multiplayer Defense!
Join the Ultimate Tower Defense Adventure!
The world's first real-time 4-player multiplayer defense game! Castle Defense Online!
Castle Defense Online offers an exciting and strategic experience where 4 players can play together in real-time, defending your base from waves of enemies. Whether you're a fan of tower defense games or multiplayer games, this action-packed RPG is perfect for you!
Features:
- Strategic Multiplayer Defense: Work as a squad in 2 player games or gather a team of 4 to battle it out in this thrilling co-op defense game.
- Easy & Intuitive Controls: Classic 2D side-scrolling action with simple controls that anyone can master. Perfect for those who love arcade and adventure games.
- Unique Characters & Powerful Skills: Collect a diverse set of heroes, each with their own special abilities, and create the ultimate tower defense strategy.
- Endless Growth: Customize your heroes with over 50 types of runes and climb through 20 tier levels. It's time to go beyond the limits!
- Challenging Bosses & Freaky Monsters: Prepare for epic battles against freakish bosses and hordes of jungle creatures.
- Build & Upgrade: Construct and upgrade your base and towers to withstand the toughest enemies in this immersive online experience.
- Adventure Time with Friends: Join or create rooms where you and your friends can play together, defending your base in a world full of imposters and hidden dangers.
- Free Games: Enjoy this free-to-play game that combines elements of strategy games, io games, and td mechanics, making it one of the most engaging multiplayer games out there.
Are you ready to face the reality of defending your base against overwhelming odds? Gather your squad, set up your defenses, and dive into the ultimate tower defense experience with Castle Defense Online.
Play together and see if you can survive the clash of enemies in this fast-paced adventure.
Perfect for:
If you’re a fan of the monkey defense genre or enjoy creating your own games with game maker tools, Castle Defense Online is a must-play. Perfect for those who love the thrill of popping bloons and engaging in brawl-style battles, or those who enjoy building and crafting like in multicraft.
Whether you're into hide and seek games or you’re a fan o