Complex sentence: Each level has a different grid size, and different types of ribbons, but the main goal is to place coloured ribbons down in such a way that the top-most layer of ribbon has matching colors with the square it's placed on.
Split into simpler sentences: Each level has a different grid size, and different types of ribbons. The main goal is to place coloured ribbons down in such a way that the top-most layer of ribbon has matching colors with the square it's placed on.