This is my contribution for the Rainbowduino Carnival Competition.

Please vote for me:
yourfreepoll.com/mvexghzbsp.html

Raindrops - is a Rainbowduino Game using a Rainbowduino and a second Arduino connected to an Accelerometer. With that the current position/movement is determined and send via the I2C Bus to the Rainbowduino.
With that you can move the red dot on the Matrix and avoid hitting the falling blue 'raindrops'. But if you do so, the game is over. Tilting the devices influences the speed of the drops as well.... Have fun!

For sources & more, see project page at github.com/ccb23/Raindrops