Crossniq is a tile-matching puzzle game where the goal is to make full crosses of the same colour. Each cross must extend the full length of the play field but intersection point of the cross can be anywhere. To create these crosses you have to rearrange the tiles on the play field by moving them in columns and rows. There are certain tiles with a lock icon which will not wrap from one side of the field to the other when moved, and tiles with a cross icon cannot be moved at all. Tiles with a star icon are bonus squares which will give you bonus points when you create a cross using them. These three special types of tiles can be turned into regular tiles if they are adjacent to a created cross. As you play a timer on the right side counts down, this timer is refilled every time you create a cross. Creating crosses will cause you to level-up which will increase the speed at which the timer counts down. Once the timer reaches zero it's game over.