You know what I mean - games like Planescape: Torment or Mass Effect. I'll be updating this post as people tell me about more games, as I think it would be neat to have a somewhat complete list of games like this. The rating out of five is rating the dialogue mechanic, not the games. I'm only counting adventure games where the different choices result in different gamestates, like in the Walking Dead.
Sandbox: the games mostly let you go where you want, though often limited in some way
5/5 Fallout series, a favorite of mine and a perfect example as you can talk past fights
3/5 the Elder Scrolls series, generally doesn't actually have that much dialogue that matters
1/5 Two Worlds, I guess there's a questline or two where it forks based on what you say
1/5 Risen some very basic choosing different questlines
Highly Limited Sandbox: you can go where you want but it's all gated off quite alot
5/5 Planescape: Torment, probably my favorite game ever
2/5 Fable Series I think Fable 1 was better for this, but basically you only get to choose from being a stereotypical nice guy or being a murderous cruel jerk for little reason
Hub: you get to move freely around a small area at a time
5/5 Deus Ex series
5/5 Vampire: Bloodlines just started playing it, reminds me of Deus Ex quite a bit
5/5 KotOR series
4/5 Mass Effect series, fewer less detailed choices
?/5 Jade Empire... I didn't play much of this, I dont really recall. It was pretty prominent right?
Mission Based: you get to choose the order of missions somewhat, but you basically have to go through them all in a row
5/5 Alpha Protocol
4/5 Dragon Age series, very similar to Mass Effect there aren't a ton of choices
Railroaded: you have to go straight along the story, but you make choices as you do
5/5 the Walking Dead, pretty much the entirety of the game
1/5 Binary Domain, very limited, it's mostly a Third Person Shooter but there are different conversations and endings based on how you treat your squad
18+/Pornographic: title says it all...
3/5 Corruption of Champions is all about choosing between being corrupted into a sex-demon or staying pure in the face of temptation, and keeps track of relationships with individual NPCs
???: haven't played them myself, suggested by others
5/5 Arcanum: Of Steamworks and Magick Obscura
?/5 Baldur's Gate??? I never played it because I was playing Baldur's Gate: Dark Alliance and thought it was the same game.
?/? Gothic series not sure
1/5 Shin Megami Tensei series I played 16 hours of Persona 4 and didn't see much more than a dating-like sidegame, but supposedly there's more ot it later in
?/5 the Witcher series
That's all the ones I can think of. So, what games am I missing? Tons of other people want more games like these, right? Let's help each other find ones we haven't played yet.
Sandbox: the games mostly let you go where you want, though often limited in some way
5/5 Fallout series, a favorite of mine and a perfect example as you can talk past fights
3/5 the Elder Scrolls series, generally doesn't actually have that much dialogue that matters
1/5 Two Worlds, I guess there's a questline or two where it forks based on what you say
1/5 Risen some very basic choosing different questlines
Highly Limited Sandbox: you can go where you want but it's all gated off quite alot
5/5 Planescape: Torment, probably my favorite game ever
2/5 Fable Series I think Fable 1 was better for this, but basically you only get to choose from being a stereotypical nice guy or being a murderous cruel jerk for little reason
Hub: you get to move freely around a small area at a time
5/5 Deus Ex series
5/5 Vampire: Bloodlines just started playing it, reminds me of Deus Ex quite a bit
5/5 KotOR series
4/5 Mass Effect series, fewer less detailed choices
?/5 Jade Empire... I didn't play much of this, I dont really recall. It was pretty prominent right?
Mission Based: you get to choose the order of missions somewhat, but you basically have to go through them all in a row
5/5 Alpha Protocol
4/5 Dragon Age series, very similar to Mass Effect there aren't a ton of choices
Railroaded: you have to go straight along the story, but you make choices as you do
5/5 the Walking Dead, pretty much the entirety of the game
1/5 Binary Domain, very limited, it's mostly a Third Person Shooter but there are different conversations and endings based on how you treat your squad
18+/Pornographic: title says it all...
3/5 Corruption of Champions is all about choosing between being corrupted into a sex-demon or staying pure in the face of temptation, and keeps track of relationships with individual NPCs
???: haven't played them myself, suggested by others
5/5 Arcanum: Of Steamworks and Magick Obscura
?/5 Baldur's Gate??? I never played it because I was playing Baldur's Gate: Dark Alliance and thought it was the same game.
?/? Gothic series not sure
1/5 Shin Megami Tensei series I played 16 hours of Persona 4 and didn't see much more than a dating-like sidegame, but supposedly there's more ot it later in
?/5 the Witcher series
That's all the ones I can think of. So, what games am I missing? Tons of other people want more games like these, right? Let's help each other find ones we haven't played yet.