Math Earth Defense

Defend Earth one calculation at a time!

Math Earth Defense is an arithmetic action game where you enter the answer to a falling equation and fire a rocket. Turn repeated practice into arcade play with combos, items, Fever lasers, and boss battles.

■ GAME-STYLE ARITHMETIC PRACTICE
• Enter the answer and fire to clear equations.
• Build combos with consecutive correct answers and trigger Fever Mode.
• Use varied item effects and stay focused through boss battles.

■ PRACTICE AT YOUR LEVEL
• Work through addition, subtraction, multiplication, and division.
• Follow progressive training from basic skills upward.
• Use Custom mode to choose operations and number ranges.

■ SEE YOUR PROGRESS
• Review daily and weekly question counts, accuracy, and results by operation.
• Earn medals and improve your local best records.
• Join the world ranking when you choose.

■ COLLECT AND CUSTOMIZE
• Defeat bosses to meet aliens with special math challenges.
• Solve their questions to recruit them as allies and collect unique abilities.
• Earn stars to unlock rocket, background, laser, card, and explosion skins.

Enjoy focused, repeatable arithmetic practice in a retro space arcade. It is made for learners, families, and anyone who wants to keep their mental calculation skills active.

This game contains ads and an optional in-app purchase.
Learning records and local scores are stored on your device by default. When you use the world ranking, the information needed to submit your score is sent to the ranking service.

Recent changes:
- Added a scratch pad for alien companion recruitment challenges.
- Work out each problem directly on the game screen.