Are there any differences between guild wars, guild wars factions,guild wars nightfall and eye of the north?

For example if i got factions would i be able to get professions from nightfall? would i get anything from the other versions if i bought 1 version?Are there any differences between guild wars, guild wars factions,guild wars nightfall and eye of the north?
With the exception of Eye of the North, all of the Guild Wars games are standalone games, and almost entirely different.



Core Gameplay mechanics (i.e. battle system, PvP, skill and leveling system) are almost identical between each edition, but the overworld, characters, quests, and overarching storyline are different for each game.



There is a set of core professions that are also more or less identical in each edition. However, each edition has it's own set of skills (and elite skills), as well as it's own unique types of armor and weapons for each profession. Also Factions and Nightfall each add two exclusive professions. Factions introduces the Assassin and Ritualist, while Nightfall gives you the Dervish and Paragon.



Unlike the other three games, Eye of the North is an expansion, and cannot be played by itself. It takes place in a far northern region, and continues the Guild Wars Prophecies storyline (though I believe it also incorporates some elements from the other two games). It is supposedly a bridge of sorts between the current games and the upcoming Guild Wars 2.



The bottom line is, you can get any of the four games EXCEPT Eye of the North by itself and start playing immediately. Each game has a few unique features, but you won't come across much unfamiliar gameplay switching between versions. Any other games you buy will act as expansions for the first one you bought. At a certain point in the main campaign of each game, you can also opt to transfer a character to another game (I'm currently playing through Factions with my Dervish from Nightfall). It may also be worth noting that each game has a sort of theme to it. Factions takes heavy cultural and conceptual ideas from Asian and Oriental countries. Nightfall is designed after African culture and designs. And Prophecies is based more on old European designs.



Hope this answers your question.Are there any differences between guild wars, guild wars factions,guild wars nightfall and eye of the north?
Guild Wars is unique in that the "Expansions" don't need the base game to play them. So you can just go buy Factions and play that. Here's what you get from the other games:



Guild Wars (Base game):

6 core classes: Necromancer, Elementalist, Monk, Warrior, Ranger, Mesmer

Tyria continent



Guild Wars Factions:

6 Core classes

2 Factions classes (Assassin and Ritualist)

Cantha continent



Guild Wars Nightfall:

6 Core Classes

2 Nightfall classes (Dervish and Paragon)

Elona content



Guild Wars Eye of the North:

This one is a bit different as it is actually an expansion, meaning you will need at least one of the other games to play it. Its mostly centered around max level content, and additional dungeons.



So long story short, yes you will get additional character classes and more zones %26amp; quests from buying more than one game. With the exception of Eye of the North, you don't -have- to buy more than one game though.