I made the Lil' Twister quilt with the instructions that came with it.
The Lil' Twister uses 5" charm blocks to start with, sewn together, then cut with the template or ruler in the order you sewed them. Then you sew them together in that same order row by row.
The Twister is the largest one and uses 10" blocks to start with.
There is a Mini Twister, but I'm not sure of the size of block to start with.