The game Math Aliens is designed to help improve your ability to add, subtract, multiply and divide quickly. The first think you do when playing the game is select the difficulty you would like to play on.
You start out by picking the type of math you would like to practice (addition, subraction, multiplication or division).
Once you’ve chosen the type of math you would like to practice, you move on to selecting your difficulty level. Beginner has you adding only small numbers. It is primarily for kids who are currently in the process of learning their math tables. The aliens move slowly, and there is usually only one on the game screen at a time.
The Intermediate difficulty has larger numbers than the Beginner difficulty. You need to be able to do math with two digit numbers on this difficulty. The aliens still move fairly slow, so speed is not yet critical.
On the Advanced difficulty, the numbers get larger and the aliens come more quickly. You should play advanced if you are pretty good at arithmetic, but you would like to be able to improve the speed at which you can do math.
Impossible is really difficult, and only should be chosen by players who are already really good at arithmetic. Play Impossible if you want to see just how good you really are.
When you start to play the game, aliens will begin to drop down from the top of the screen with math problems above them. You must solve the math problem and type in the numbers on your keyboard. If there is more than one number (e.g. 10) just type it in like you would type it into a calculator. If you hit an incorrect number, an error will be displayed and you will get a score penalty. When the “Remaining” number in the top right of the game screen is 0, you will pass the level.
If you take too long, the aliens will drop bombs on your city. If your entire city is destroyed you will lose the game.