There are 5 sets per Nation:

SERIES 1 : 2020 to 2025 (Incl in each core pack)

SERIES 2 : 2015 TO 2020

SERIES 3 : 2010 TO 2015

SERIES 4 : 2005 TO 2010

SERIES 5 : 2000 TO 2005

Each Add-on-series pack contains 180 questions and answers relating to that Nation and Era. Collect all series for 900 questions per nation

SELECT YOUR NATION AND ERA PACK