Heroes M&M III of course! There are a couple standout music moments I had when I was young...

Maniac Mansion - So cinematic. It took forever to load but it took games a whole new level for me.

Loom - One of the first games I played all the way through in a feverish burst.

My most memorable has to be The Legend of Zelda : Ocarina of Time. It's just such a classic, with a lot of great melodies and unique songs that take me back to my childhood. Find a good orchestral arrangement, and there's nothing quite like it.

More recently, I'm really enjoying the Sable soundtrack by Japanese Breakfast. Wonderful, atmospheric and relaxing ambient music that I could listen to all day.

For me, one of the most memorable is the soundtrack for Riven. I enjoyed Myst when it came out, but I loved Riven upon its release, and it was the first video game soundtrack I ever purchased. That probably helps make it the most memorable since it's easily the one I've listened to the longest. But I also loved how it wasn't constant but came in and out of the game in certain moments. Sometimes I wouldn't even realize the music had started until it helped punctuate an important moment.

Since then, I've fallen in love with so many, but my current favorites are probably Fez and Hyper Light Drifter from Disasterpeace, as well as anything Darren Korb has done for SuperGiant Games.

For me the most memorable soundtrack comes from Heroes of Might and Magic 3. When I think why it is so, I'd say that it enhances the strengths of the game. It personifies each of the factions, distinguishes the landscapes, brings in the mood of the campaign story. It succeeds in that, it is marvellous and unique and I will be forever able to summon it at wish.

Ironseed - I remember playing the game and the soundtrack set the stage for some epic atmospheric darkness sessions. The feeling of fascination for exploring the game was present in the music. Glad the game became available under the GPL.

The contest instructions mentioned we need to suggest a coop game so I'll do both.

Favorite soundtracks:
Baldur's Gate
Maniac Mansion
Monkey Island 2

Co-op game suggestion:
Worms is still such a great one and short/sweet.

Most memorable music score for me is the opening theme music for Elite 3:Frontier, First Encounters. I first heard it on the Amiga500 about 25 years ago give or take, and I still to this day whistle it from time to time. I even managed to find the original score sheet and been practising on the piano. I only recently found out it's actually called Paradise, go figure :) So beautiful.

Final Fantasy Piano soundtracks from FFVII through FFX will always be among my personal favorites. That said, I'd have to go with the Far Cry 3 - Blood Dragon soundtrack. Power Glove really nailed the synthwave sound that backed the retro future aesthetic of the game perfectly. The soundtrack has had a place on my phone since it was released.

Heroes III because thanks to it, I revisit again and again my childhood memories

Batman: Arkham City

The music in this game was such an integral part of the whole experience, which so masterfully accomplished the task of translating the emotional intensity of every moment and getting the player closest to feeling like they are really in the mind and shoes of the Batman or Bruce Wayne.

My most memorable soundtrack would have to be either Diablo 2 simply because that was the music of my childhood or Bastion, which was the first time in my gaming experience where a soundtrack elevated a game beyond what just visuals and gameplay could do.

Nine pages in and not one mention of Total Annihilation?

Gadzooks! Huge symphonic sound, 3D models, my devious LAN mates with their nude (cloaked) commanders. Memories I shall treasure.

Mechwarrior 2 Mercenaries. I've still got the first six tracks in my current playlist, and you could pop in the Total Annihilation CD and play that when you got fed up

It's all about memories - Starcraft, myself and a mate playing a dialup game, Me "We've got ventral sacs" - Them "We've got coffee"
MW2 Mercs - escaping from a Clan prisoner of war camp in a hovercraft - or - after all night session of C&C waking up shouting "Fight, Win, Prevail"

Game music got good, the main theme from Planescape Torment, or Baldur's Gate, or the tower town in HoMM 3, or the exploration theme from Morrowind, or that bit in Bladerunner where you stand on the balcony and watch the world go by or the Monkey Island theme, or that bit of apocalyptic country & western from Full Throttle. How can you pick one, it's like picking a child. Some of these games are thirty years old, so you got generational things to take into account. Oh, and that bit in Homeworld where they play Sam Barbour's Addagio for strings, with that voiceover "Your planet is on fire, Everybody is dead" I laughed so hard I felt like a member of the Adams Family.

Thanks for the question, but I ain't gonna choose

My most memorable game soundtrack would be Final Fantasy VII's. It was the first PlayStation game I bought for myself as a kid, and I still remember the sense of excitement and danger I got from the initial score when you had to infiltrate the reactor and get back out again. My little sweaty fingers were gleefully dancing around the controller all throughout that game. Honourable mentions would be the iconic Age of Empires melody, which surely must have forever imprinted itself on my brain after all those years of playing it, and the battle music in Heroes 3 with the drums going nuts until I could no longer resist the urge to jump out of my chair and shake my booty, Stronghold style.

Heroes of Might and Magic III will forever have the biggest impact on my music and game taste. Such a whimsical yet mature entry to the fantasy genre. A well crafted, nuanced, epic yet intricate soundtrack that still to this day shake me to my core. Just hear the Heroes Orchestras reimagined versions and you know that this is a soundtrack for the ages that has strong roots and is not bound by its medium. Greatness both in and out of context.

Bastion. Behind its colorful graphics and calm narrator lies a true emotional rollercoaster of a story, which couldn't have been delivered so effectively without Darren Korb's fantastic score – whenever I hear it, I get the same shivers I got when I first experienced it while playing the game.