Mass Effect 3, so much dialogue it'll make you shit over 9000 Prothean Bricks.

Mass effect 1: Mass amounts of dialog written for either good, bad or neutral dialog options. Depending on the option chosen, a whole new set of dialog choices may be present that the other 2 cannot access. Every option is also voiced in both Male and Female voices.

Mass Effect 2: Confirmed to have 20+ percent more dialog than Mass Effect 1. That means 20+ percent more voice overs for both Male and Female Shepard. Every choice you made in Mass Effect 1 continues effecting your game in Mass Effect 2, altering the options for dialog available in the game. If you make a new character in Mass Effect 2 without loading anything from the previous game, your character's dialog options and consequences will vary from if you had loaded a previous character, potentially adding or subtracting dialog from the game.

Mass Effect 3: Since the Mass Effect series has been confirmed as a trilogy, and it has also been confirmed that your main character from Mass Effect 1 and 2 may not survive given the choices you make in Mass Effect 2, that means that a whole new set of dialog will be written for both Shepard and whatever character takes his/her place if he/she dies in Mass Effect 2. These two characters will also have to be voiced in both Male and Female voices who's dialog will be affected by the choices made in the previous 2 games.

This was written very quickly so if I missed anything, please let me know. Just trying to grasp the mass amount of dialogue that will be in the Mass Effect trilogy.

EDIT: In the original, Shepard had 20 animations for getting into cover. In Mass Effect 2, he has 200. It has also been confirmed that in Mass Effect 2, you will be dynamically talking to characters while behind cover (not just in cut scenes, live fire fight in-game).

I should play Mass Effect some time

I plan on getting the full Mass Effect trilogy once completed.

I'm probably the only person who liked the dialogue is mass effect on account of having not read any books for a few months prior to playing.

I liked the dialogue. I liked the game!! #2 is gonna be sweet!!! 

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 Indeed you should. I'm on my 7th play through right now (I like Mass Effect, ok?). Get the PC version though, the Xbox version has long loading times and can't keep a stable FPS. It goes from 30 to 12 sometimes just because you're driving across a planet.

Nah, I gotta get the 360 version, my computer probably couldn't handle it

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What's your specs? I'm running it fine on a 9600GT with a 1680x1050 monitor.

Radeon x600

I dunno what else

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Yeeeeeaaaah..... on second thought, get the Xbox version.