There are 2 different games.
Big Two involves poker hands.
Thirteen, also known as Tien len in Vietnamese or American Killer or Killer does not, but it has triples, 4-of-a-kinds, runs of 3 or more, and pair sequences. The ranking of the suits is different. In Thirteen it's s,c,d,h from low to high (what Lattimer said), while for Big Two it's normally d,c,h,s (as natureboy said) but there are variations like c,d,h,s to match bridge and 7-stud (alphabetical) or c,d,s,h or c,s,h,d.
Last edited by BruceZ; 07-23-2014 at 01:30 PM.