Shoot the asteroid with the correct answer | Collect yellow S orbs for +20% shield; shielded collisions bounce.
All problems are multiplication facts from 2 2 through 12 12.
Correct answers increase your score and streak. Larger products appear on larger asteroids. Asteroids can now bump into each other like billiard balls.
Yellow S orbs add 20% shield. Asteroid collisions bounce the ship away and reduce shield by 10%.
If your shield is already gone and you collide again, explode.gif appears over the ship and the ship explodes.
The mission lasts 10 rounds. Sounds use bgmusic.mp3, laser.mp3, explode.mp3, gameover.mp3, and victory.mp3. Correct answers play goodhit.mp3. Shielded collisions play bounce.mp3. Shield orb collisions play powerup.mp3. Wrong answers display wronganswer.jpg and play wronganswer.mp3.