So, instead of writing my short story that I've been planning on finishing for what seems like aeons, I procrastinated by writing this. Lo and behold, "My top 11 best-written video game favorites." 
1) Photopia by Adam Cadre.
A relatively unknown freeware Interactive Fiction game (that is, no graphics, for you trigger-happy action lovers) that tells a short, but very emotionally engaging story. One of, if not the saddest and beautiful works I've ever read, video games medium or otherwise. You can download it for free from the IF section of Adam Cadre's site (scroll down a bit).
http://en.wikipedia.org/wiki/Photopia
2) Planescape: Torment by Black Isle Studios.
Now, I was never much into fantasy, but this game is a like a book in its own right. Or a series of books. Every character is well-defined, the story is interesting, and more importantly, UNIQUE, and you build a great attachment to your character as you play along. You play as the Nameless One, an immortal man with no memory of his past - every "death" makes you lose a part of your former self. You've lived a thousand lives over a countless number of years, you were sometimes evil, good, crazy, and sometimes genius. But you've only other peoples (and otherwise) memories and a body full of tattoos to recall of all the things you've done. You wake up on a stone slab in a mortuary with a floating talking skull sidekick by your side, again, no memories of who you are, but with a feeling that something important is missing. PLAY THIS GAME.
http://en.wikipedia.org/wiki/Planescape:_Torment
3) The Longest Journey by Funcom.
A completely stunning adventure game, both visually and story-wise. The story starts in a cyberpunk-like future, where you play a young art student. You later find out that you have a strange ability to "shift" between worlds - and find yourself in fantasy realm, magic critters, dragons, and all. The game's hard to describe - it must be experienced. If you're a fan of adventure games, or even sci-fi or fantasy stories, or even just emotionally involving stories at all, be sure you play this game. You won't be disappointed.
http://en.wikipedia.org/wiki/The_Longest_Journey
4) Syberia by Microids.
Designed by an uber-talented Belgian chap BenoƮt Sokal, this, like The Longest Journey, is one of the most touching adventure games I've ever played. And just like The Longest Journey, it features a female protagonist and 3D graphics on static backgrounds, making for quite atmospheric visuals. You are a lawyer named Kate Walker who's on a business trip to some remote location in Europe to finalize the take-over of a toy factory. As the story unfolds, you travel across the world, encounter strange characters in strange locations (eg, Komkolzgrad, a communist-esque mining town where you meet a soprano singer and her one "fan" bent on kidnapping her), and then end questioning your choice in life and career and choose to follow someone's dream instead. Which coincidentally becomes your dream as well. At least that's how I got it.
Beautiful, beautiful story overall. Be sure to check the game out.
http://en.wikipedia.org/wiki/Syberia
5) Frederick Pohl's Gateway 2: Homeworld by Legend Entertainment.
Another Interactive Fiction game, this one has a graphic interface. You "see" what's directly in front of you depicted as a static bitmap image in the top right of your screen. The game's (obviously) a sequel to Frederick Pohl's Gateway. You, as the MC, investigate a strange alien artefact that suddenly appeared in Pluto's orbit. I've never read anything Frederick Pohl, but the game was insanely immersing and interesting to play. It's also available for free download as abandonware from the Home of the Underdogs site.
Wikipedia Article On Fallout
6) Day of the Tentacle by LucasArts.
Back in the day, LucasArts used to make funny and clever adventure games (as, like Yahtzee said, "opposed to milking the Star Wars cow until its udders turned to charcoal-black stalactites"). The game is a sequel to Maniac Mansion, an older LucasArts adventure game. You play a family of misfits (although they might as well be roommates, that part of the plot is not particularly defined) adventuring through time: one stays in the present, one travels back to the past, and one to the future, all to save the world from the menace of a mutant purple tentacle (yes, you read that right) bent on conquering the world. And you get to freeze a hamster in a icebox for a couple hundred years over the course of the game. What's not to love?
http://en.wikipedia.org/wiki/Day_of_the_Tentacle
7) Sam & Max Hit the Road by LucasArts.
Another famous LucasArts adventure game. You play a strange anthropomorphic detective duo of a homicidal rabbit and a fedora-wearing dog.
Max: Sam, either termites are burrowing through my skull, or one of us is ticking.
Sam: Oops, oh yeah.
[pulls out the scientist's head, which is a bomb]
Max, where should I put this so it doesn't hurt anyone we know or care about?
Max: Out the window, Sam. There's nothing but strangers out there.
http://en.wikipedia.org/wiki/Sam_&_Max_Hit_the_Road
8) Fallout by Black Isle Studios.
An awesomely detailed and believable post-apocalyptic world, realistic characters, and black humour make this one of my favourite games of all time. You're a resident of Vault 13 - one of many underground bunkers sheltering WWIII war survivors for many, many years. You were born in the Vault and never saw the light of day. But one day, the water purification system breaks, and you're chosen as the most able resident to venture into the unknown... The game's setting isn't much as of post-apoc future, as "what we imagined future to be like in the 50's" set against humanity emerging from the devastation of nuclear war. Absolutely a must-play for any self-respecting RPG gamer.
http://en.wikipedia.org/wiki/Fallout_(computer_game)
9) System Shock 2 by Looking Glass Studios.
Because I haven't played Bioshock yet.
10) Deus Ex by Ion Storms Inc.
If I were to choose a literary-related label for this game, I'd call it a "cyberpunk techno-thriller." Writing alone doesn't make this game, but it's certainly more than up to standard. Filled with every conspiracy you can possibly imagine, the game sets you, a bio-enchanced UNATCO (read: NATO) agent, to fight terrorism over the globe. Or join it if you feel so inclined. And is it really terrorism after all? The plot would surely make for an interesting novel if one ever came out, but its perfect in its game form as is. You've probably heard of this game before - it's often considered the best FPS-RPG hybrid ever produced, and rightfully so. If you haven't already, you owe it to yourself to check the game out. I don't recommend the sequel (Invisible War), however. It's, in my humble opinion, complete crap compared to the original. Also, did I mention that this game's INSANELY awesome? No? Well, this game's INSANELY awesome!
http://en.wikipedia.org/wiki/Deus_Ex
11) Duke Nukem 3D by 3D Realms.
What?
http://en.wikipedia.org/wiki/Duke_Nukem_3D

1) Photopia by Adam Cadre.
A relatively unknown freeware Interactive Fiction game (that is, no graphics, for you trigger-happy action lovers) that tells a short, but very emotionally engaging story. One of, if not the saddest and beautiful works I've ever read, video games medium or otherwise. You can download it for free from the IF section of Adam Cadre's site (scroll down a bit).
http://en.wikipedia.org/wiki/Photopia
2) Planescape: Torment by Black Isle Studios.
Now, I was never much into fantasy, but this game is a like a book in its own right. Or a series of books. Every character is well-defined, the story is interesting, and more importantly, UNIQUE, and you build a great attachment to your character as you play along. You play as the Nameless One, an immortal man with no memory of his past - every "death" makes you lose a part of your former self. You've lived a thousand lives over a countless number of years, you were sometimes evil, good, crazy, and sometimes genius. But you've only other peoples (and otherwise) memories and a body full of tattoos to recall of all the things you've done. You wake up on a stone slab in a mortuary with a floating talking skull sidekick by your side, again, no memories of who you are, but with a feeling that something important is missing. PLAY THIS GAME.
http://en.wikipedia.org/wiki/Planescape:_Torment
3) The Longest Journey by Funcom.
A completely stunning adventure game, both visually and story-wise. The story starts in a cyberpunk-like future, where you play a young art student. You later find out that you have a strange ability to "shift" between worlds - and find yourself in fantasy realm, magic critters, dragons, and all. The game's hard to describe - it must be experienced. If you're a fan of adventure games, or even sci-fi or fantasy stories, or even just emotionally involving stories at all, be sure you play this game. You won't be disappointed.
http://en.wikipedia.org/wiki/The_Longest_Journey
4) Syberia by Microids.
Designed by an uber-talented Belgian chap BenoƮt Sokal, this, like The Longest Journey, is one of the most touching adventure games I've ever played. And just like The Longest Journey, it features a female protagonist and 3D graphics on static backgrounds, making for quite atmospheric visuals. You are a lawyer named Kate Walker who's on a business trip to some remote location in Europe to finalize the take-over of a toy factory. As the story unfolds, you travel across the world, encounter strange characters in strange locations (eg, Komkolzgrad, a communist-esque mining town where you meet a soprano singer and her one "fan" bent on kidnapping her), and then end questioning your choice in life and career and choose to follow someone's dream instead. Which coincidentally becomes your dream as well. At least that's how I got it.

http://en.wikipedia.org/wiki/Syberia
5) Frederick Pohl's Gateway 2: Homeworld by Legend Entertainment.
Another Interactive Fiction game, this one has a graphic interface. You "see" what's directly in front of you depicted as a static bitmap image in the top right of your screen. The game's (obviously) a sequel to Frederick Pohl's Gateway. You, as the MC, investigate a strange alien artefact that suddenly appeared in Pluto's orbit. I've never read anything Frederick Pohl, but the game was insanely immersing and interesting to play. It's also available for free download as abandonware from the Home of the Underdogs site.
Wikipedia Article On Fallout
6) Day of the Tentacle by LucasArts.
Back in the day, LucasArts used to make funny and clever adventure games (as, like Yahtzee said, "opposed to milking the Star Wars cow until its udders turned to charcoal-black stalactites"). The game is a sequel to Maniac Mansion, an older LucasArts adventure game. You play a family of misfits (although they might as well be roommates, that part of the plot is not particularly defined) adventuring through time: one stays in the present, one travels back to the past, and one to the future, all to save the world from the menace of a mutant purple tentacle (yes, you read that right) bent on conquering the world. And you get to freeze a hamster in a icebox for a couple hundred years over the course of the game. What's not to love?
http://en.wikipedia.org/wiki/Day_of_the_Tentacle
7) Sam & Max Hit the Road by LucasArts.
Another famous LucasArts adventure game. You play a strange anthropomorphic detective duo of a homicidal rabbit and a fedora-wearing dog.
Max: Sam, either termites are burrowing through my skull, or one of us is ticking.
Sam: Oops, oh yeah.
[pulls out the scientist's head, which is a bomb]
Max, where should I put this so it doesn't hurt anyone we know or care about?
Max: Out the window, Sam. There's nothing but strangers out there.
http://en.wikipedia.org/wiki/Sam_&_Max_Hit_the_Road
8) Fallout by Black Isle Studios.
An awesomely detailed and believable post-apocalyptic world, realistic characters, and black humour make this one of my favourite games of all time. You're a resident of Vault 13 - one of many underground bunkers sheltering WWIII war survivors for many, many years. You were born in the Vault and never saw the light of day. But one day, the water purification system breaks, and you're chosen as the most able resident to venture into the unknown... The game's setting isn't much as of post-apoc future, as "what we imagined future to be like in the 50's" set against humanity emerging from the devastation of nuclear war. Absolutely a must-play for any self-respecting RPG gamer.
http://en.wikipedia.org/wiki/Fallout_(computer_game)
9) System Shock 2 by Looking Glass Studios.
Because I haven't played Bioshock yet.
10) Deus Ex by Ion Storms Inc.
If I were to choose a literary-related label for this game, I'd call it a "cyberpunk techno-thriller." Writing alone doesn't make this game, but it's certainly more than up to standard. Filled with every conspiracy you can possibly imagine, the game sets you, a bio-enchanced UNATCO (read: NATO) agent, to fight terrorism over the globe. Or join it if you feel so inclined. And is it really terrorism after all? The plot would surely make for an interesting novel if one ever came out, but its perfect in its game form as is. You've probably heard of this game before - it's often considered the best FPS-RPG hybrid ever produced, and rightfully so. If you haven't already, you owe it to yourself to check the game out. I don't recommend the sequel (Invisible War), however. It's, in my humble opinion, complete crap compared to the original. Also, did I mention that this game's INSANELY awesome? No? Well, this game's INSANELY awesome!
http://en.wikipedia.org/wiki/Deus_Ex
11) Duke Nukem 3D by 3D Realms.
What?
http://en.wikipedia.org/wiki/Duke_Nukem_3D
幻術