In Light, you'll be a glowing sphere of light that shoots out little bursts of energy and light to destroy the different enemies that come its way. Your ball of light acts much like a ping pong ball. It will bounce off the edges of the screen. You can control it with the W,A,S, and D keys to a small extent but not entirely. You'll also bounce off enemies but try not to do that too much because you can lose life and die. Try to collect green power ups to let you last longer in order to destroy the very things that are trying to steal your light!