This game tests shapes, (x,y) coordinates and angles.

Download Algebra Tutorial 2 to learn about coordinates.

Download Trig Tutorial 1 to learn about angles.


Each player has 2 cruisers, 1 scout and 1 destroyer.

The enemy ships (controlled by the computer) cannot be seen until they are hit.

You shoot by entering the coordinates of your gun and the coordinates of your target.

In the Hard level, the computer shoots back at your chosen gun, often hitting.

To win, you will need to use the attack angle to find where the enemy gun is located.

You can use a ruler and a protractor on the screen of your phone/tablet to find the location of the enemy gun.

Alternatively, you can use Trigonometry (see Trig Tutorial 5) and a calculator (there are only 6 possible values for the side length of the triangle, and we know the angle).

* Written by a Maths teacher with 20 years of teaching experience.

* Completely free (no Ads).

* Works without internet so that you can play while travelling in the train, bus etc. Internet only required for links to privacy policy and other tutorials.

* Made with GameMaker (www.yoyogames.com)

* Only a 12 MB download.