A lottery game playing method includes providing a numerical deviation factor, issuing a lottery ticket to a player imprinted with groups of chance numerals including a group of primary numerals and groups of option numerals. The number of primary numerals is equal to the number of option numerals of each group of option numerals. Each option numeral of each group of option numerals is the same as a positionally corresponding one of the primary numerals, or different from the positionally corresponding one of the primary numerals by the numerical deviation factor. The method next includes receiving from a drawing result numerals positionally corresponding to and equal in number to the number of primary numerals and the number of option numerals of each of the groups of option numerals, and assigning a win to the lottery ticket if the result numerals are the same one of the groups of chance numerals.