Grille Logic is a simple logic puzzle game where you must arrange arrows on a grid. In each stage, you're shown two 4x4 grids - one with arrows all pointing in the same direction and some spaces open, while the other is clear. You're given a set of arrows to place on the open grid, and your goal is to place them so that when one grid is overlaid on the other and rotated, the arrows all point in the same direction.
The game's objectives change as you progress through it. At first, you need to place arrows so that they line up with existing ones when rotated. Later, you have to find gaps in the grid of arrows to match the ones already placed down. Grille Logic comes with both a single-player campaign and a two-player versus mode.