To stop the falling aliens, answer the math problems on their stomachs. The faster you answer, the more points you score.

Choose Your Questions

Firs, go to the Settings tab and choose which kind of questions you would like to answer. Question range from basic addition or multiplication facts to operations with two digit numbers.

Entering Your Answer

You may answer using either the on-screen buttons or the keyboard. Note: You may need to press the Number Lock key (here’s how) if you want to use the ten-key pad on a keyboard.

Don’t Guess Wildly

If you enter an incorrect answer, you’ll see your guess turn red, and the buttons will dim. When this happens, you won’t be able to enter another guess until the buttons return to normal.

Aliens on the Ground

If an alien reaches the ground, it will start producing baby aliens until you answer its question. The game ends when there are ten baby aliens.