Actually tiles are avaliable for the 2x2 - 7x7 as well as the megaminx and helecopter cube, so that would be 9 sizes of tiles. The tiles will fit but they will take up the entire space of the cubie and is something that I find highly annoying to have brushing against my fingers when I turn but If that doesnt bother you then go for it. You could also buy regular size ones and cut them down if you wished that would also work.