NSMBW is at least SMB6 (NSMBDS being SMB5). If you count both SMB2s separately, it's SMB7. If you count SML1 and 2, it's SMB9. If you then feel obligated to count SML3, and thereby also WL2, 3, 4, and SI, it's SMB14, or 16 if you also count WMOD and VBWL. If you count YI because it's SMW2, and then also count YIDS and YS (which was originally going to be called YI64), then it's SMB17 or 19. If you figure that if you're going to include YS, you should also include its semi-sequel YTT/YUG, and also figure that if you're going to go all the way to including YS, it's only polite to also include DKC 1-3, DKL 1-3, DKJB, and SPP, it's SMB26 or 28. Anyone who understood this post wins a muffin.