Zolyx is a Qix variant: the player is presented with a white playing field and controls a pixel. Whenever this pixel moves over the playfield, it leaves a line behind - and when the line becomes a closed form, it gets coloured. The goal is to colour 75% of the playfield, everything above gives bonus points for the high score list.

Well, it is not that easy. White pixels fly around the field and touching them result in death, similarly deadly is going backwards on a line. At least the player has two tricks to help himself: he can change the direction of the white pixels by pressing a button (limited) and jail them when drawing a closed line around them. This is possible because the pixels are either confined to the coloured or uncoloured parts.

After finishing a level a new one starts with three changes: one more white pixel, an extra life for the player and one additional usage of the "direction change" button.