Publisher's description:
As the Dragon Wars become a distant memory for the people of Terrinoth, adventurers set their sights on new realms of adventure. Ships set sail across treacherous waters for the first time in centuries to open the doors to the forgotten world of Zanaga. Chaos grips the land. The old empire of lizardmen has fallen, its people have become shadows of their ancestors, descending into savagery. The taint of an ancient evil known as Tarakhe corrupts all and the primal gods must be awoken to restore the balance of nature. Only the reptilian makhim have the rituals to summon the primal powers that can purge Tarakhe's corruption, but heroes are needed to face the primal gods before they destroy more than just Tarakhe...
Mists of Zanaga adds a colorful new board overlay, depicting the wild jungles and swamps of Zanaga. Six brand new heroes will be able to explore this new continent, uncovering the secrets of the makhim's rituals, encounter wandering monsters, and hunt for the elusive Lost City. Adding all-new gameplay mechanics, a variety of primal gods to face, and over 165 new cards to bring this lush landscape to life, Mists of Zanaga creates a totally new way to play Runebound. Search out the secrets of the primal gods' power and help summon them to free Zanaga from the clutch of Tarakhe.

From the box:
Far to the south of Terrinoth lies a land of wild creatures and hidden wonder. But something terrible slumbers at Zanaga's core. The mists that cover the land carry with them a terrible curse, a corrupting taint that erodes the grip of civilization, Abominations lurk in the swamps and forests. The once-might lizardman empire has devolved into roving bands of murderous barbarians. The mahkim have come to a tragic realization: A malevolent force has taken hold of Zanaga, and it must be purged.
Now the mahkim work to awaken their primal gods, while the madness that is Tarakhe swells in power. If civilization is to survive, great heroes must rise to defend it. Will you have the courage to go forth into the trackless jungles? Will you face the fearsome predators and ancient deities of Zanaga?
Mists of Zanaga features a gorgeous new board overlay, 165 new cards, six new heroes, and exciting new mechanics. Travel more quickly than ever before, meet exotic friends and foes, and explore unique new cities, including native villages and trading outposts.
Explore ancient ruins and wield potent new artifacts. Journey through the swamps and jungles of an exotic new land, using vital survival gear to aid you in your quest. Survive the endless peril of new roaming monsters and foil the ceremonies of awakening that will doom all civilization. Will you have the strength and wisdom to restore balance to Zanaga?