언더 해치

Contains adsIn-app purchases
Content rating
Everyone
10+
Downloads
Content rating
Everyone
Mild Fantasy Violence
In-Game Purchases
Learn more
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About this game

Become the captain of a submarine guarding the final hatch deep in the ocean.

■ What the Game Is

- Turrets automatically attack mechanical monsters swarming from above.

- Select cards during battle to upgrade turrets and create your own unique combinations.

- As you clear stages, stronger enemies and giant bosses appear.

■ 12 Types of Turrets

Deep Cannon, Penetrating Harpoon, Torpedo, Electric Beam, Hydrostatic Cannon, Sonar, Bubble, Mine, Acid Ink, Decoy, Drone, and Coolant Cannon.

Each turret has a different attack method, so battles can change completely depending on the combination.

■ The Fun of Upgrading

- Upgrade the submarine body and turrets to increase combat power.

- Upgrade equipment such as hatches, propellers, armor plates, periscopes, and torpedo tubes.

- Name your captain and customize your own submarine.

■ Patrols While You Sleep

When you clear a stage, the submarine goes on patrol to collect rewards. They accumulate for up to 8 hours, so be sure to claim them when you log in. ■ Hell Difficulty

Face tougher enemies to obtain valuable materials like steel plates.

■ Note

- Free to play

- Includes ads (rewarded ads)

- You can purchase paid items such as Diamonds and Passes within the app

- Android users can save their progress via Google Play Games

Contact: modoolabs1730@gmail.com
Automated combat defense where you use submarine turrets to stop mechanical monsters surging into the deep sea
Updated on
Nov 12, 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
    Location, App activity and 2 others
  • This app may collect these data types
    Location, Personal info and 4 others
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

[New Mode] Co-op is here
- Clear Normal Stage 5 to unlock Co-op (Challenge tab).
- 2-4 players defend the Golden Temple with shared HP.
- Earn Captain shards by luck. Higher levels, better odds.
- After 3 daily runs, earn Enlisted ship shards.
- Chat with preset phrases and emotes.
- Co-op Log shows your last 30 runs.

[Changes]
- Max energy up (50, Pass 80).
- Mission rewards rebalanced.
- Translation fixes.
Content rating
Everyone
Mild Fantasy Violence
In-Game Purchases
Learn more

App support

About the developer
김진춘
gas1730@gmail.com
봉수로 100 현대아파트, 704동410호 동구, 울산광역시 44073 South Korea

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