@Paul
Sorry to break your bubble but the only way Immortal Defense could score a writing award would be if it was judged by quantity. The game part of the game was really good, but the walls of text in-between levels were just trite melodrama.
i definitely agree that it's easy to be biased but i'm just going by feedback reviews here, not my own personal opinion. i could quote some of the game's reviews
"The brief text sequences between levels carries the story--to fight in "pathspace," you have foregone your body and normal existence, and the concerns of the people who are sworn to defend seem increasingly irrelevant to you, in this very different existence. I typically think this kind of backstory is irrelevant (and often poorly written), but here it's almost haunting--nicely done." - Greg Costikyan in his Game Tunnel review
"I think this was maybe the second game where a specific piece of text haunted me late, after completion. "What can change the nature of a man?" was the first - if you know what game that's from, you'll like Immortal Defense." - Patrick Dugan in Play This Thing
"This is a game that will force you stop. It will force you think about the world around you, your very mortality and the price you would pay to become immortal. It will LIE to you on a level that Portal never would have dared to go. And you know what the worst part is? You will KNOW it’s lying to you. You will know it is all a lie but you will not want to believe it. Even as it becomes clearer and clearer – even as the inevitable comes right into your sight and starts to strangle your very mind, you will refuse to believe it." - The Angry Pixel
"Two things put the story head and shoulders above a lot of other SF-themed games. First, it's the epic scope, a galactic story that spans time and space. Second, the direction of the plot. This is not headed where you think it is. Oh no. [...] The story is told through passages of text between each level and, like Braid, it seems almost independent to the game itself. However, coincidentally both titles at certain points tell the story through the gameplay, and to startling effect. This is quite rare in my experience. [...] The only problem is that, like Planescape: Torment, Immortal Defense has raised the bar. This of course is a good thing, but I can’t help feeling spoilt, like I won’t appreciate anything less." -Electron Dance
"One of the funny things about plots in video games is that the medium, in its current form, tends to lend itself to certain stories. Fantasy and science fiction aside, the average video game always has to incorporate obstacles, conflict, and struggle within the narrative. That’s true of most stories, but in video games these elements are particularly palpable because generally, the player’s function is interacting with those problems. Yet rarely do stories ever address the conflict itself, probably for the same reasons actors don’t look directly into the camera. That’s the means of connection with the video game world and to acknowledge it would be to break that bond. But the indie game Immortal Defense has managed to create a powerful story that marches right up to that element and forces the player to question everything about it. The end product is a tower defense game with one of the best stories I’ve ever experienced." -Popmatters.com
"Immortal Defense takes a simple, oversaturated genre and elevates it to another level entirely. The existentialist storyline is not only compelling and thoughtful, but it's probably the best explanation for "turret defense" gameplay I've seen yet" - Derek Yu's review in Game Tunnel
"Another selling point is the compelling story: which other tower defense game has kept you awake till 3AM?" [...] "As far as making a purchase goes, I can say that the writing and narrative design here is among the best I've seen in a long time in any indie game, much less a tower defense game. "I love you grandpa" is a piece of text that haunted me, leaving me shaken with wonder and existential horror, for hours after I finished the game." - Jay is Games
"In short, Immortal Defense is what all the other tower defense games wish they could be: smart, elegant, and chock-full of delicious strategic offerings. It manages to be both fun and artsy at the same time, a feat which few games pull off. We also guarantee that the story will astonish, as it is quite possibly one of the best stories in gaming." -Bigdownload.com
now of course game journalists don't knows know what good stories are either, so here are some of the fan emails and user reviews the game has gotten too
"Without hesitation I'm giving this game a 5, which is not to say that it's perfect, the graphics may put some off, though myself I never really cared much about those, and a few of the more esoteric "towers" can behave in a different manner than a player could expect, but the story is downright amazing. I've found myself replaying certain parts of the game a couple of times even weeks after I've completed it just so I could re-experience certain dialogue again." -user review on GameZebo
"The only game that I can think of that comes close to connecting your actions to the story so well is that last level on Braid and by comparison I think that takes certain liberties with what came before (like flipping Tim)." - Gregg B in a blog comment
"Everything is explained and integrated with the storyline down to the cursor itself. It is hard to say enough about this game. You will not be disappointed if you're a fan of good writing or TD style games." - an Amazon.com user review
"Yea, I loved this game, especially for the story. The twist in the first episode is one you've seen a hundred times before, but there are at least two more big twists coming, one of which is a jaw-dropper." - comment in Jay is Games
"The plot is ecstatically engaging and emotional, one that you’ll invest in tremendously. What does it mean to become immortal? To become a god, or an avenging demon? How does it feel to defend your planet, and the daughter you left forever on its surface? There’s no way I’ll spoil it for you, but the narrative takes you through dramatic twists, highs and lows, and will really engage you with its high sci-fi nature." -user review on MobyGames
"Jason Rohrer once wrote something to the effect that for a game to be considered good, gameplay should be relevant to the story in more ways than just moving it forward. While it's counterproductive to compare the quality of writing and while it's remarkable how Chris Avellone et al. managed to weasel out of TSR's license restrictions and introduce a number of innovations, Immortal Defense is objectively a better game [than Planescape Torment] (there, I've said it, now I have to eat my hat) because every gameplay element of ID is important for the story down to the shape of the path, the availability of points (A Broken Circuit, anyone?) and even the weather effects." - Starmaker in the game's forums
"First of all thanks for creating this great game, rinku. I've had an awesome time playing it (sometimes even until 2-3 am). Yesterday evening I've finished it, and I still feel somehow strange. The ending brought really controversial and creepy feelings and thoughts in my brain, and as I was riding the bus today listening to the game's soundtrack and watching the rain on the streets... man, I just can't explain how I felt. Congratulations on making a game that makes you think and feel about the world a bit differently." - a post in the game's forums
"Immortal Defense is only a game, but it touches many quite serious subjects - like protecting the family, barrier between gratitude and worship, limits of responsibility, loneliness, memory and love. Actually the game seems like a stylish metaphor of human life, gameplay aside." - Thomas Grochowiak
"You have truly broken ground with Immortal Defense, taking both the tower defense genre and the art of storytelling in games in bold and innovative new directions. I look forward to one day seeing your name amongst the great game designers whose work we shall be enjoying for generations. Truly, I cannot describe what a delight it was to see millions of years unfold through the perspective of an unspeaking protagonist who slowly but surely became ever more insane. Thank you for the trip, and may there be many more just as innovative and wonderous." -fan email
""I can't deal with how beautiful this game is. I can't. It defeats me. I have been holding off completing the last campaign for weeks now because I don't want it to end. The gameplay, narrative and soundtrack work together so flawlessly it boggles my mind. Never stop, any of you."" -fan email
about 90% of every review and user/fan comment of the game i've seen has mentioned that their main reason for liking the game was the story. so i don't think that saying immortal defense was known for its story is that big of a stretch, considering the above (and this is just a tiny percent of what's out there, i didn't want to flood the page with quotes, but it could fill ten times this easily, this is just for illustration).
i should also note its tv tropes page -- i don't know how much that says, it might just have a lot of fans into the story, but i've never seen so many people go into so much depth about how the story works for an indie game before:
http://tvtropes.org/pmwiki/pmwiki.php/Main/ImmortalDefensei totally and definitely agree that programmers sometimes overvalue their stories. but i didn't write the story, the writer did (john thornton), and the writer isn't a programmer, he's a professional writer, so it's the programmer overvaluing his writer's story if anything

but basically it would take more than you've written to "burst my bubble" considering the above quotes and all the similar ones i didn't quote, biomechanic