Is a logic puzzle with simple rules and challenging solutions. Left click an island and drag toward another island. Release the mouse when both islands are highlighted. What am I supposed to do? .

Is a logic puzzle with simple rules and challenging solutions. Is played on a rectangular grid. The grid has both black cells and white cells in it. The objective is to place light bulbs on the grid so that every white square is lit. Also, no light bulb may illuminate another light bulb. Left click a square to place a light bulb. Right click to mark with X.

Is a logic puzzle with a bit complicated rules and challenging solutions. Left click on a square to make it black. Right click to mark with dot. Click and drag to mark more than one square. What am I supposed to do? .

Is a logic puzzle with simple rules and challenging solutions. You have to divide the grid into rectangular and square pieces such that each piece contains exactly one number, and that number represents the area of the rectangle. Click and drag to draw a rectangle. To remove lines use the right mouse button or hold the Ctrl or the Shift key. What am I supposed to do? .