Runes 4 is an expansion to Runes, which allows for two additional players to join in the game and adds new magic spells and characters to the game. Each expansion in the Runes series can be played at the same time to allow up to eight people to play the game at once. This expansion requires the rules and components from the first game in the series. Runes 4 adds the Magical Fields of Wizardry and Elemental Fire to the game.