Forgotten Realms: Demon Stone

Demon Stone is a game with a story written by R.A. Salvatore about 3 adventurers who get involved in an inter-planar war.

Story
Orc armies are raiding the Gemspark mines in Damara. 3 adventurers, Rannek, Zhai & Illius take it upon themselves to save the civillians in the area & secure the mines. They join up and eventually defeat the warlord controlling the dominant army. Searching the area, they come across a mysterious stone and accidentally release the prisoners it contains, the Githyanki general Cireka and the Slaad Ygorl. They summon their armies and resume an old fight.

Zhai takes them to her home, Cedarleaf, a Wood Elf village, only to find it under attack by Cireka's Gith. Ygorl intervenes, trying to steal Cireka's Silver Sword. The party escape to Blackstaff Tower to meet with Illius' mentor Khelben "Blackstaff" Arunsun who tells them that they need to go to a Yuan-Ti temple to Merrshaulk to find a demon stone that will re-imprison Cireka & Ygorl. Unfortunately, Ygorl shows up again vowing revenge and while the protagonists escape, Khelben disappears & Blackstaff tower is reduced to ruins. The three find a portal to the Yuan-Ti temple and steal the demon stone. They then go to Mithral Hall which is under attack by an army of Trolls. They aid Drizzt Do'Urden & Clan Battlehammer in defeating the trolls and use the Underdark tunnels from the hall to get to an ancient Githyanki stronghold where they expect to find the two warring generals so that they can imprison them in the stone. Unfortunately, Ygorl sends them both through a portal to a dragon's lair. The dragon obeys Ygorl & kills Cireka, rendering the demon stone useless but Rannek takes Cireka's sword & slays the dragon in turn. Ygorl leads the trio back to Damara and then to Limbo and reveals that he manipulated them into joining together & bringing him Cireka's sword. They kill Ygorl & escape back to Cedarleaf where they find Khelben, unharmed. King Gareth Dragonsbane awards the three an area of 'un-tamed land' as a reward.