Neverwinter Nights

Neverwinter Nights is the name of two seperate game series, the first one by Stormfront Studios and the latter one by BioWare and Obsidian Entertainment.

Neverwinter Nights (1991)
The first Neverwinter Nights game was released in 1991 and is widely regarded as the first ever MMORPG and one of the so called Gold Box games.

Neverwinter Nights (2002)
The first  Neverwinter Nights  in this series was developed by BioWare and released on June 18 2002. Neverwinter Nights 2  on the other hand was developed by Obsidian Entertainment and released on October 31 2006.

Unlike Baldur's Gate, this series focuses much more on combat and multiplayer and comes with an extensive editor which allows players to create their own modules. Also unlike BG, it is based on Dungeons & Dragons v3.5 rules instead of Advanced Dungeons & Dragons 2nd Edition.

There are two main games in the series, both of which received a number of expansion packs:
 * Neverwinter Nights
 * Neverwinter Nights: Shadows of Undrentide
 * Neverwinter Nights: Hordes of the Underdark
 * Neverwinter Nights 2
 * Neverwinter Nights 2: Mask of the Betrayer
 * Neverwinter Nights 2: Storm of Zehir
 * Neverwinter Nights 2: Mysteries of Westgate

Setting
Like Baldur's Gate, Neverwinter Nights is set in the Forgotten Realms and mainly focuses on the eponymous city of Neverwinter, which lies at the northern half of the Sword Coast but takes the player to all sorts of places, such as Rashemen, the Underdark and even Maztica.

Cross-references between Games
In addition to general cross-references based on the setting, there exist a number of game-specific references.
 * Lord Foreshadow in the first Baldur's Gate references both the Neverwinter Nights from 1991 and 2002.
 * "Oh, I actually hail from Waterdeep. The great City of Splendors has much more in the manner of social luxuries suited towards my particular tastes. I do, however, make a point of keeping in touch with Neverwinter, though I have only visited once previously. It was quite popular in those nights, if I recall correctly. I'm going to make a second trip in the coming year, and I'll wager it will be as popular again."
 * Aphril in Baldur's Gate II has a vision of Neverwinter Nights (2002).
 * "I see... a place... coming soon... where there is... never winter... where people have control... over their own stories. Yes, it's a shameless plug from Aphril Foreshadow."
 * One of the loading screens in Baldur's Gate II states that the players will be able to import their characters from the game to Neverwinter Nights (2002). A feature which was never implemented.

Links

 * Neverwinter Nights Wiki