Xonix is a video game in the style of Qix.

Players can move a cursor in four directions around the screen to capture the territory. Any area comprised in a closed box the player draws is captured, but if another object hits the player's cursor (or the line being drawn) before the box is closed, the territory, and a life, are lost. The goal of the game is to capture a certain percentage of the territory on the screen. As player box off a portions of the screen, a part of the hidden picture is revealed in the claimed area, with unclaimed territory remaining an opaque blind or translucent over the full image. The full image can be viewed as a reward for beating the level.