OK thanks. This is an unusual prerequisite. I don't have Jenga but I have Kappla this will fit as well I guess. Just have to align on 54 blocks on 18 stairs. I suggest you detail a bit more this part in the document.
I don't have one too, been using alternative methods listed here. Mainly this one.
Many thanks beorhol for the links, that's nice and credible alternative to Jenga.