The world's first real-time multiplayer defense game. Castle Defense Online! 1. 4 users can play cooperatively in real time. 2. Easy control with 2D horizontal scroll. 3. Collect unique characters, powerful skills, and various items. 4. Become stronger with 50 runes and 30 relics. 5. There are cute enemies and scary jungle monsters. 6. Clear the im
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App Store edition · Researched Nov 9, 2026 · Guide updated Nov 9, 2026.
This title is designed as a real-time multiplayer defense experience where up to four users can join forces and play cooperatively together to defend their castle against incoming waves of enemies.
Based on source 1.
You can improve your strength by collecting unique characters, powerful skills, and various items. Additionally, you can further enhance your capabilities by utilizing the game's collection of 50 distinct runes and 30 relics.
Based on source 1.
To successfully stop incoming enemies and clear difficult bosses, you should focus on building towers. These towers allow you to employ a variety of strategies to manage the battlefield effectively during your defense sessions.
Based on source 1.
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2026-11-07
Other bug fixes
Release notes supplied by the developer through the App Store.
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Developer description, as provided in the original store listing.
The world's first real-time multiplayer defense game.
Castle Defense Online!
1. 4 users can play cooperatively in real time.
2. Easy control with 2D horizontal scroll.
3. Collect unique characters, powerful skills, and various items.
4. Become stronger with 50 runes and 30 relics.
5. There are cute enemies and scary jungle monsters.
6. Clear the impossible bosses.
7. Build towers that can use a variety of strategies.
8. Meet and grow with friends in the guild.
Can you safely stop incoming enemies?
Apple App Store lookup ↗ · Store ratings, prices, and availability can change. Check the App Store for your region.
Castle Defense Online - 4p is listed on the US App Store. Availability varies by region and compatible device.
The recorded download price is free. In-app purchases, subscriptions, or additional content may cost extra. Source checked Nov 8, 2026.
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