Solitaire or Patience are a family of solitaire games with a standard playing card deck. While most Patience rules are for 1 player, there are a few Patience game rules for 2 players! They are also called "Zankpatiencen" (quarrel patiences) in German Patience books. There are also commercial versions available with a collection of 2 full card decks (including Jokers), especially made to play Patience. The cards are extra small to carry in your pocket, in a little box. Instructions for several different Solitaire games are included.