Think of tiles as quilt blocks, although many of them don't resemble traditional quilt blocks. Dozens of tiles are included in the program and you can also draw and color your own. When I open Creative Design, I usually choose 2 or 3 tiles at random and tell Creative Design to make me a design using those tiles. The program makes the designs according to various Methods involving rotations, mirrorings, or random placements of the basic tiles. One can control these design Methods and also change the color and size of the tiles.
Rectangular blocks are possible.
There is a Make Design button on the tool bar that changes the design, within the pre-selected design parameters, every time one pushes it. It's sort of like doodling to keep clicking on the Make Design button and watch the design change. I can stop creating new designs at this point and start manipulating this design further, or I can keep clicking the Make Design button until I find a basic design I like better as a design starting point. Let's say I like this design well enough to want to manipulate it further. That is when the fun really begins.