Arduino 8x8 Matrix LED Game

For a class I am taking I had to make a game using an 8x8 LED Matrix. The game is based around dropping a "bomb" on a target scrolling across the bottom of the screen.

Each level the target moves faster and you are moved further away from the target. After 4 levels it ends.

The parts I used were:
1-Arduino Nano ATMEGA328.
1-Parallax 5 position switch.
1-8x8 LED Matrix
1-470Ω Resistor network
1-solderless breadboard

I plugged pins D0-D7 in to the resistor, and then to the positive pins of the matrix. 
Pins D8-13, A0-A2 to the negative of the matrix.

The 5 Positions switch should be attached to pins A3-A6. The trick here is A6 cannot be made digital, you'll have to read it as analog. No biggie.

Load the code on the Arduino.

Thanks for looking at the game.