The speciality from fantasy flight games, living card games (LCG). They differ in theme (Lord of the Rings, Legend of the Five Rings, Game of Thrones) and mechanics but all grow and develop over time giving a complex, woven story over time.
Lord of the Rings LCG: Mount Gundabad by FFG
Lord of the Rings LCG Roam Across Rhovanion Adventure Pack by FFG
Arkham Horror LCG - The Depths Of Yoth Mythos Pack by FFG
Legend of The Five Rings (L5R) - Underhand Of The Emperor Scorpion Clan Pack by FFG