AJ's blog

I just finish making a little java game called Prime Killer. The game was originally created by Phillip Dorrell, and is called PrimeShooter. His version was written with javascript and CSS and runs inside your web browser. I merely took his creation and converted it into Java and change a few little things.



The whole concept of the game is this: There are a numbers falling from the top of the screen, and you as the player must shoot these numbers with their prime factors. Shooting the number will reduce the falling number to the quotient of the two numbers. You must shoot the falling numbers until it is reduce to one (1) or until it is prime, in which case you shoot it with a 'P'.

For example, say that the number 28 is falling. You can shoot it with either 7 or 2, because those are the only prime numbers that 28 is divisible by. Let's say that you shoot 28 with a 2; this will turn the falling 28 into a 14, because 28/2 = 14. Now, you can either shoot the 14 with a 7 or a 2. You shoot it with a 7, turning it into a 2. Now you have a falling two; You can either shoot it with a 2 to make it a one and disappear, or shoot it with a 'P' (because 2 is a prime number) to make it disappear. Now that that number is gone, you can focus on the next falling number.

Here are the controls:

• Left and Right arrow keys will move you (the little box at the bottom) in their respective directions.
• The numbers 2, 3, 5, 7 can be fired by pressing their respective buttons, and the numbers 11, 13, 17, 19 can be fired by pressing the key corresponding to the first letter of that number (so 'E' for eleven, 'T' for thirteen, and so on).
• After the game is over, you can restart by pressing the space bar.

Here are the rules:

• If a falling number hit the bottom once, it will return to the top of the screen and turn red. If the falling red number hits the bottom, you loose a life.
• Everytime you reduce a falling number, your point total increase by the value of the number that you hit it with.
• If you make a number disappear, your point total increase by the value of the falling number.
• If you shoot a falling number with a number that it is not divisible by, your point total decreased by the value of the number that you fired.
• Initally, the numbers will range from 2 to 50, but will slowly increase all the way up to 1,000.
• As the game goes on the falling numbers will begin to appear at a slightly faster rate.
• The game is over when you have no lives left.

You can launch the game by clicking the 'Java Web Start' button above, and choose 'Open' when prompted to, and the game should open in another window. You can download the game by clicking the 'Download Jar' button, and save it and you can play it later just by double-clicking that file that you save.