Region puzzles

In a region puzzle you divide the grid into areas, and each area has to follow a rule. In Shikaku it's a rectangle with as many cells as its number, in Spiral Galaxies a shape that looks the same when you turn it around its centre, in Fillomino a block whose size is written inside it. Suguru goes the other way: the regions are drawn for you, and you fill them with numbers. You can play all of them here, free, in your browser.