Antix

Antix is a remake of Xonix with an inverted hidden play field. There are multiple balls bouncing across the screen. You have to slide your character across the screen to stop them. Every time you surround an area that isn't occupied, it disappears. You have to try to get rid of as much space as possible. Every time you destroy a certain amount of land, you go to the next level. Don't let your character get hit by one of the balls or you lose.