Last updated on December 12th, 2025 at 05:42 pm
Castle Defense Online – 4p – Strategy Game Review
Castle Defense Online – 4p is a Strategy game from donghwan kim, first launched in 15th May 2020.
It’s rated 9+ and currently has 93+ ratings on the App Store.
What Makes Castle Defense Online – 4p Stand Out
The world's first real-time multiplayer defense game.
Castle Defense Online!
- 4 users can play cooperatively in real time.
- Easy control with 2D horizontal scroll.
- Collect unique characters, powerful skills, and various items.
- Become stronger with 50 runes and 30 relics.
- There are cute enemies and scary jungle monsters.
- Clear the impossible bosses.
- Build towers that can use a variety of strategies.
- Meet and grow with friends in the guild.
Can you safely stop incoming enemies?
This Strategy game offers engaging gameplay and regular updates for mobile players.
Player Feedback
As a newer release, Castle Defense Online – 4p is building its player community. Early feedback suggests .
Recent Updates & Development
Latest Update: 3rd December 2025
Recent improvements include:
"2025-12-03
Other bug fixes"
Download & Availability
Castle Defense Online – 4p is available through the official App Store for iOS devices.
Get Castle Defense Online – 4p on App Store
Requirements: Requires iPhone 5s / iPad Air / iPad Air (Cellular) / iPad Mini 2 (Retina) / iPad Mini 2 (Retina, Cellular) / iPhone 6 / iPhone 6 Plus / iPad Air 2 / iPad Air 2 (Cellular) / iPad Mini 3 or later.
Compatible with iPhone and iPad devices.
Player Experience Highlights
Community Insight:
Im honestly surprised not more people play this game. Its legitimately fun and we enjoy every minute Im on the game. Theres also a really nice community on discord for the game. Its still a little rough around the edges, but the game dev is consistently making it better and better. We absolutely love this game and hope to see more people play it in the future.
We have no complaints honestly, biggest complaint would be not enough players. Community is pretty tight so finding teammates and guild is easy, enjoyable and very replay-able. Would like to see a game mode more fit for solos.
We like this game a lot, our brother and cousin had a fun time playing this game but the sheer lack of waves on the defense mode is not a lot. So only complaint is there not being a lot of waves. Even expert mode is easy.
Us and our brother like to play together. So when he got a phone recently, we wanted to play this game together(note: we have IPhone he has android). For some reason, whenever he creates a match, it wont show on ours. Simple conclusion: in no way is this game cross play. Even if its two different types of phones.
Amazing game. Just what we have been looking for to play with our friends. Only downside is that there are still some updates required to fix some small issues but the game is extremely in depth and is a lot of fun! We hope for some new game modes in the future once this game blows up.
When we saw your latest game is uhh idk the language but yeah we saw a item and we saw rainbow background of few item are they going to be added or no.
So rare to find a server, or we wait for 10~20 min to start our own. Really needs more viable solo options.
Very fun and addictive game to play with friends, you wont regret playing it.
This is one of the most creative and unique castle defense games ive ever seen, each of the characters are fun and unique! We currently main pierrot and have gotten help from the wonderful and thriving offical CDO discord to complete our Clown build. Im Grandmaster 4 and absolutely love this small game.
We love the game. Btw for the people who cant get past the loading screen you have log in or create an Game Center account then itll work without a problem. Ok now to the review, the reason why its not a 5 is because that we wish there was more, and you get more diamonds from defense mode but thats all really just a little more content and Ill give it 5. Good luck for the people who cant get past the loading screen, and Im srry if trying out Game Center doesnt work.
Morning everyone, Im surprised to see so many ppl having issues with the loading. Ive been fortunate to have not experienced this. In overall we enjoy the game, char selection, mechanics, and different modes. Our reasons on why its not exactly a 5 is for the easy and blunt fact that a lot of your growth is depended on diamonds which is a pay win tactic. They do have a ad watcher so you may earn diamonds but its every 3 min and so many things are based on this currency. Char purchases, builds aka stats, guild upgrades, enchantments & more. Some guilds even have a requirement that you have to purchased a upgrade within the guild aka diamond upgrade to join/stay in the guild. Us and our buddies love the game and the prices for diamonds are low in cost but do not like how it feels like a mandatory thing.
Cant get past the loading screen. Looked like a cool game so im kinda sad we cant play it.
The game will open, but when we click start it will only load. Ive tried reinstalling and resetting our phone.
We tried on different divides and we cant get past the loading screen no matter how hard we try.
User feedback from Apple App Store
App Details
- Version: 2355
- Size: 303.24 MB
- iOS: 12.0 or later
- Languages: EN
- Content Advisory: Infrequent/Mild Cartoon or Fantasy Violence
- Developer: donghwan kim
Last updated: 3rd December 2025 | Genre: Strategy | Developer: donghwan kim