RR: Royal Random Defense

Contains adsIn-app purchases
Content rating
Everyone
50+
Downloads
Content rating
Everyone
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About this game

Merge jellyfish, build a powerful deck, and smash ocean trash in a strategic puzzle adventure! Tactical merging meets roguelike deck building beneath the waves. 🌊

Dive into RR: Royal Random Defense, where strategy, luck, and ocean cleanup collide. Create a five-jellyfish squad, master unpredictable evolutions, and adapt your tactics as every run unfolds differently.

🌊 Merge, smash & clean the ocean
Break through layers of underwater garbage blocks with your jellyfish squad. Every shot clears trash, protects the sea, and takes you deeper into the ocean. Easy to start, with plenty of strategy to master.

👑 Master the Royal Random twist
Merge two jellyfish of the same level to evolve them—but prepare for the unexpected. The Royal Random mechanic can create a powerful upgrade or a surprising new result. Adapt your deck, improvise your strategy, and turn chaos into victory.

🃏 Build a strategic jellyfish deck
You are not just firing shots—you are commanding a squad. Build a custom deck of five jellyfish to match your playstyle:
• SYNERGIZE — combine unique abilities to trigger powerful chain reactions
• COUNTER — choose the right jellyfish for different garbage block types
• LEVEL UP — strengthen your deck as you journey into deeper waters

⚡ Unleash special skills
Every jellyfish brings a different ability. Trigger explosive bursts, tactical freezes, piercing shots, and wide-area clears that can turn the battle around. Upgrade your squad to make every move faster, brighter, and more satisfying.

🪼 Explore the deep sea
Clear trash and travel from sunlit coral reefs to the darkest depths. Discover new ocean zones, hidden bosses, and a growing team of jellyfish heroes along the way.

Game features
✓ Easy-to-learn merge and block-breaking gameplay
✓ Strategic roguelike deck building with unpredictable evolutions
✓ Quick sessions that fit easily into your day
✓ Colorful underwater art and relaxing sound design
✓ New jellyfish, skills, levels, bosses, and ocean zones to discover

Assemble your jellyfish squad, dive into the deep, and help restore the ocean! 🪼🌊

[COMMUNITY & SUPPORT]
We are always improving the game. Share your feedback, suggestions, or support questions:
Email: amebastudio@naver.com
Merge jellyfish, smash blocks & build your deck in this ocean puzzle game!
Updated on
Apr 16, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Device or other IDs
  • No data collected
    Learn more about how developers declare collection
  • Data is encrypted in transit