Pools of Darkness (game)

Pools of Darkness is the final title in the four-game Forgotten Realms series of computer role-playing games developed and published by Strategic Simulations, Inc. It is the sequel to Secret of the Silver Blades.

Story
Angered at the party's successes in the prior games in the series, the evil god Bane seizes control of the Moonsea region. The cities and towns of the region (with the exception of the evil cities of Zhentil Keep and Mulmaster) are ripped from the earth, leaving only craters. Storms prevent entry to the region and darkness covers the sky at all times. Control of the region is given to Bane's three lieutenants: the marilith Kalistes, the glabrezu Tanetal, and the balor Gothmenes. Now Bane's followers work to amass armies that will pour forth from the Moonsea region to invade the rest of the Realms.

Having anticipated Bane's plot, the sage Elminster summons the party to Limbo and tasks them with stopping Bane's evil. Elminster provides the party with access to magical portals called pools of darkness, which enable travel to the outer planes where Bane's servants have their power base.