Comet Defense:Build Mars Bases

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Content rating
Everyone
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Content rating
Everyone
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About this game

Comets rain down from space—and your missiles defend the Mars bases.

Comet Defense is an action defense game where you shoot down comets and build bases on Mars.
Choose your name and country, then compete with players worldwide for score and base-building glory.
Complete all Mars bases to win the mission. If your base is destroyed, it's game over!

■ Game Features
• Intuitive touch (tap) controls to fire missiles
• Hit comets, collect gold, and upgrade your bases
• Complete the mission by building all Mars bases
• Tense battles with missile overheat and energy management
• Combo and chain bonuses for high-score runs
• Wave Events: pick one card for a blessing—or a risk
- Double Score, Cool Cannons, Base Shield, Triple Salvo, Gold Rush, Overdrive, and more

■ Country Battles & Rankings
• Choose your country from major nations such as Korea, the USA, and Japan
• Check real-time country rankings by bases built
• Climb the personal player leaderboard (score and level)
• Scores and bases built are recorded after each run

■ Wave Events
Special events appear at set intervals—choose a card.
Powerful buffs await, but some cards come with risks.
Combine luck and strategy to chase the top score!

■ How to Play
1. Enter your name and select your country.
2. Tap PLAY to start the game.
3. Tap the screen to fire missiles and shoot down comets.
4. Collect gold to strengthen bases and build new ones.
5. Complete all Mars bases—or aim for the highest score.
6. Check global player rankings in RANKING.

■ Languages
Korean / English / Japanese

■ Perfect For
• Fans of casual action and defense games
• Players who want quick, one-round sessions
• Anyone who enjoys country-based leaderboard competition
• Fans of space, missiles, and Mars themes

Stop the comets now—and lead your country to #1 in Mars base construction!
Updated on
Jun 29, 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.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
App info and performance and Device or other IDs
Data is encrypted in transit
Committed to follow the Play Families Policy