Galaxy Defender is a free math game for kids ages 4-9, hiding real addition, subtraction and times-tables practice inside a bright, friendly space shooter. Your child thinks they're saving the galaxy. They're actually building math-fact fluency.

BRAIN BOOST - MATH INSIDE THE GAME
Mid-battle the action freezes and one giant question fills the screen while a warm voice reads it out loud: "What's seven plus five?" Kids fly into the right answer out of three choices, with three chances to get it. Brain Boosts start on wave 1 and come back every 15-25 seconds, so a five-minute mission is packed with real practice.

IT ADAPTS TO YOUR CHILD
A persistent skill level tracks your child, not the level number. Rolling accuracy nudges the questions harder when they're flying and quietly eases off when they're stuck, so it never becomes a wall - and never becomes boring.

THE MATH GALAXY - 9 FACT-FAMILY PLANETS
Every answer is filed into a fact family, and each family is a planet that stays dark until your child truly has it: Add to 5, Add to 10, Doubles, Big Adds, Take to 10, Take to 20, and the x2, x5 and x10 tables. Mastering a planet is worth a huge star bonus and unlocks a brand-new ship.

TIMES TABLES (OPT-IN)
Pick "Add & Take Away" for younger pilots or switch on "Times Tables Too" for big kids. Multiplication ramps on your child's own times-table experience.

18 SHIPS EARNED BY LEARNING
Six Classic hulls earned with career stars. Six Cosmic ships that unlock only by mastering a math planet. Six Legendary ships for galaxy-wide mastery. And they're not just paint: Cosmic ships fire faster, Legendary ships fire faster AND get a permanent triple shot.

ADVENTURE MODE
A world map with voiced comic-book cinematics and named boss monsters. Free the Bloop aliens from grumpy GLOOMZILLA, melt TIDEZILLA's frozen oceans on Aqua World.

GROWN-UPS' MISSION CONTROL
Tap the gear, answer a quick grown-up gate question, and the Parent Zone opens: a Report Card with accuracy bars for addition, subtraction and multiplication, a question-by-question log, planets mastered, and a one-tap "Delete My Child's Data".

A TIMER YOU CAN TRUST
Choose a 1-minute Quick Patrol, a 3-minute Mission or 5-minute Deep Space. The mission genuinely ends there, with stars and a celebration - never a "one more life" trap, and never a fail screen.

KIND TO KIDS, HONEST WITH PARENTS
No ads. No in-app purchases. No subscriptions. No chat. No third-party tracking. An account is optional and free - without one, nothing ever leaves your device.

Perfect for pre-K through grade 3, homeschool math practice, or the ten minutes in a waiting room where a worksheet was never going to happen.