Grid Wars is a two player game where you have to hit your opponent frst to win. the graphics are minamalistic but I found it quite entertaining while playing it briefly with my son.
Youplay in the first person perspective and move through a maze of square colums using either the WASD or the arrow keys (depending on hether you are player 1 or 2 As you move you send out pulses of energy (well you could actually describe them as balls if you wish, lol). The aim is to hit your opponent before they hit you.
You can download the game HERE