Word Defense: Blue Hole Diver
Learn words by playing a game
Only for iPhone
Free · In‑App Purchases
iPhone
Dive into the Blue Hole, learn Spanish, Japanese, and Korean words, and stop deep-sea monsters with sea-creature towers. Every defeated monster speaks a word.
"Learn words, defend the sea!"
Word Defense: Blue Hole Diver is an edutainment game that blends vocabulary learning with tower defense, set in the mysterious deep-sea world of the Blue Hole and drawn in beautiful 16-bit retro pixel art.
Dive into the Blue Hole to learn essential vocabulary, then spend the gold you collect on sea-creature towers to fend off the monsters rising from the deep!
■ Key Features
1. Essential core vocabulary in multiple languages
- Spanish (everyday essentials based on corpus frequency)
- Japanese (high-frequency words from modern conversation and media)
- Korean (everyday essentials for Korean learners)
- English (top words based on NGSL 1.2, for Korean-interface users)
- Switch your learning language anytime from the main screen
2. Step-by-step diving lessons by depth
- Levels grouped in sets of 10 words, each level one meter deeper
- Clear one level at a time and explore further into the deep
- High-quality native TTS pronunciation on every word
3. Sea-creature towers full of personality
- Clownfish (10G): steady range and balanced fire rate (2.0s)
- Pufferfish (20G): long-range sniper covering a wide area (1.6s)
- Giant Octopus (50G): rapid close-range strikes that shred narrow chokepoints (0.9s)
- Combine each tower's range ring and traits to build the best defense line
4. Natural, reliable real-time review
- Each time you defeat a monster, the word you learned and its meaning pop up above it for a second
- Native TTS speaks the word at the same moment, so you review listening and meaning instantly
- Overlap control keeps speech clear even in the heat of battle
■ Recommended for
- Anyone bored by flashcards and rote memorization
- Players who want to grow their Spanish, Japanese, or Korean vocabulary while having fun
- Fans of retro pixel art and the tower defense genre
- Anyone who wants light, quick vocabulary review on the commute
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- A word question appears before each wave. Get it right and a Clownfish helper joins you.
- Towers you place now carry over to the next wave. No more rebuilding from scratch.
- At WAVE 2, pick a permanent Clownfish upgrade: attack speed or range.
- The Pufferfish is available to buy from WAVE 3.
- Early waves were rebuilt so each one brings something new.
- A short prep time before enemies arrive lets you place your first tower.
- Clear WAVE 5 to earn a first-rescue crest.
The developer, sanghui lee, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location
- Identifiers
- Usage Data
- Diagnostics
Data Linked to You
The following data may be collected and linked to your identity:
- Location
- Identifiers
- Usage Data
- Diagnostics
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- sanghui lee
- Size
- 38 MB
- Category
- Education
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- 광고 제거 $1.99
- Copyright
- © 2026 SANGHUI.