Diablo is an action-adventure game developed by Blizzard North and released by Blizzard Entertainment in December, 1996.
The story of Diablo is based on the foundation of a war between Heaven and Hell… Diablo, the Lord of Terror and one of the Three Prime Evils of Hell, who has been imprisoned in a Soulstone and buried in caverns deep beneath the town of Tristram. Although he was sentenced into eternal damnation, the power of the Soulstone weakened over time, eventually allowing Diablo to rouse form his forced slumber.
Diablo was able to possess a human host, but he is far from his full power. So he bides his time, at the same while summoning his minions to the town of Tristram, making it his new region of the underworld. While regaining his strength and preparing for the time that he would once again emerge to seek his brothers – Baal and Mephisto, to free them as well.
Shortly after, the player enters and takes control of a lone hero as he or she battles to save the town from the attack by the demons. He or she fights their way through sixteen levels to face Diablo, they encounter various monsters, quests, tomes, scrolls, weapons and other miscellaneous items.
At the end of the game, the player character has again trapped Diablo in a Soulstone. The hero then pierces his or her head with the Soulstone, attempting to contain the Lord of Terror. But Diablo’s soul was too strong for the unnamed hero, thus corrupting.
In Diablo II which was released in 2000, the player is an adventurer appearing in the wake of the destruction caused by Diablo, who attempts to find the out the cause of the destruction, starting with the corrupted warrior. The rest of the story is revealed through the different levels, he faces off against the Great Evils, as well as his equally malevolent brothers Mephisto, Lord of Hatred and Baal, Lord of Destruction, both whom Diablo released. In the end, the player eventually reaches and slays Mephisto and Diablo.
The story continues in the expansion to the game, where the player chases after the last of the Greater Evils, Baal. In this expansion pack, Diablo II: Lord of Destruction which was released in 2001, the unknown hero return to follow the path of Baal, into the Barbarian Highlands. The Lord of Destruction, together with his hordes of minions, intends to corrupt the Worldstone, which protects the whole of the mortal plane from the forces of Hell. Player here faced a new series of quests and challenges to prevent Baal and his minions from destroying the Sanctuary.
This 2008 Diablo III, a sequel to Diablo II will soon be released… Two decades have passed since the Three Prime Evils of Hell wandered the world of Sanctuary in a ferocious rampage to shackle humanity into slavery. For those unnamed heroes who fought the Prime Evils directly, the memory fades slowly but the wounds of the soul still burn.
The game takes place on Sanctuary, a world of dark fantasy. Unbeknownst to most of its inhabitants, Sanctuary was saved some twenty years ago from the demonic forces of the underworld by a few brave and powerful heroes. Most of those warriors who directly faced the armies of the Burning Hells — and were fortunate enough to survive — went mad from their experiences. And most of the others have buried their haunted memories and pushed the horrors from their thoughts. In Diablo III, players will return to Sanctuary to confront evil in its many forms once again.