# Castle Defense Online

> The game that falls in love :) Real-Time Multiplayer Defense!

Canonical page: [https://chrome-stats.com/d/com.blackhammer.castledefense](https://chrome-stats.com/d/com.blackhammer.castledefense)

## Overview

- **ID:** `com.blackhammer.castledefense`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Black Hammer
- **Category:** GAME\_STRATEGY
- **Downloads:** 1,475,023
- **Rating:** 3.97 / 5 (25,330 ratings)
- **Version:** 2577
- **Last updated:** 2026-09-08
- **First published:** 2020-04-18
- **Publisher country:** KR
- **Size:** 164 MB
- **Data as of:** 2026-09-14
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.blackhammer.castledefense)
- **Website:** [https://blackhammerco.com/](https://blackhammerco.com/)
- **Privacy policy:** [http://blackhammerco.com/rule.html](http://blackhammerco.com/rule.html)

## Description

**Castle Defense Online** offers an exhilarating real-time multiplayer tower defense experience where up to 4 players team up to defend their base against waves of enemies. This 2D side-scrolling action game combines strategy, RPG elements, and cooperative gameplay for an engaging adventure.

Key features include intuitive controls, unique heroes with special abilities, customization through over 50 runes, and challenging boss encounters. Build and upgrade your defenses, join or create rooms to play with friends, and immerse yourself in a thrilling game that blends arcade excitement with strategic depth. Perfect for fans of tower defense, multiplayer games, and classic side-scrolling action, Castle Defense Online promises endless growth and fun in a free-to-play format.

## Rankings

- #54,395 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_ADSERVICES_AD_ID`
- `android.permission.ACCESS_ADSERVICES_ATTRIBUTION`
- `android.permission.ACCESS_ADSERVICES_TOPICS`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.INTERNET`
- `android.permission.WAKE_LOCK`
- `com.android.vending.BILLING`
- `com.android.vending.CHECK_LICENSE`
- `com.blackhammer.castledefense.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`
- `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE`
- `com.google.android.gms.permission.AD_ID`

## Review summary

Castle Defense Online is praised for its F2P friendliness, diverse hero roster, and challenging, engaging gameplay with strong replay value. However, multiple reviews highlight recurring problems: lag and server instability across regions, frequent login/crash issues, and updates that don’t always load or install smoothly. Language and localization gaps (inconsistent English) hinder non-native players, while monetization concerns and device compatibility issues add frustration. Overall, the game has solid core appeal but struggles with connectivity, localization, and maintenance.

### Pros

- Free-to-play friendly (F2P)
- Multiple heroes to choose from
- Challenging levels
- Fun/engaging gameplay
- Strong long-term appeal and replay value

### Cons

- Lag/latency and server instability (SEA/US regions)
- Frequent login crashes and startup issues
- Language/translation problems and English localization gaps
- Pay-to-win concerns and monetization pressure
- Update/installation problems and device compatibility issues

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.blackhammer.castledefense)