Ars Magica
Ars Magica is a fantasy role-playing game in which the players play wizards in "Mythic Europe", a version of Medieval Europe in which magic works and folk tales are true. The game is famed for its innovative magic system which influenced the design of many later games.
History
Ars Magica was designed by Jonathan Tweet and Mark Rein·Hagen. The first edition was published by Lion Rampant Games in 1987, the second edition also by Lion Rampant Games in 1989. In 1991, Lion Rampant merged with White Wolf, who published the much expanded third edition in 1992. Two years later, White Wolf sold Ars Magica to Wizards of the Coast, who sold it again to Atlas Games. Atlas Games published the fourth edition in 1996 and the fifth (and currently latest) edition in 2004. The fifth edition won the Origins Award in 2004.