When you found the game that marked your teenage years

You should check other stores than Steam more often - that game is on GOG since at least a couple of months if not years :-).

(I liked Settlers 2 & 3 more though)

;_; I don't want to grow up.

Here in Argentina games were also pretty unaccesible if you were a-not-so-wealthy 8 year old whose parents think videogames are crap. So i played the hell out of Demo Cds that came with magazines. I also was surprised recently. I have a demo from around the year 2000 of a game called Odium that i never saw anywhere. Now i find out it was release 13 years after, under the name of Gorky 17. Funny thing is sometimes the full game ended up sucking, but demos were always fun. Ah, good times.

There was this one game that had humans morphed into robotic-driving people. Forgot what it was called,but it was fun as fuck. It's like hyperspeed rollerblading/motorcycling

Mine was probably HardBall!.

I played the hell outta that game for many years, in a couple different iterations, till I started spending more time with consoles, and y'know, women. :)

edit: Great thread topic, BTW. :)

A bit younger than my teens, but I remember doing odd jobs/chores all summer to save up for One Must Fall when I was about ten. Booting that baby up through DOS on a bigass, glowing CRT; pure gaming nirvana.

Battle Realms. I've searched soo long for it.Then I found it,played it and didn't like it.

Mine was Fallout. I had the original CD from some magazine back in the days, but I've lost it afterwards. And now I have it on GOG.

Starcraft and Counter-Strike were my main games as a teen. As a kid I played adventure games and some other stuff.

Teenage years?

That has to be Oblivion. Man, I must have sunk more than 3k hours into that game...
And when I couldn't play it, I was busy over at the Oblivion Nexus to find mods I could use when I could play.

When I was 13-14, I'd say.

Mine is Call of Duty 4: Modern Warfare.

I do not know what one game marked my teenage years, so many with so many memories. I guess I gotta say Super Smash Brothers Melee/Brawl or Mario Kart Double Dash. Alien Hominid with the PDA games was great too. I played a lot of BF2:MC because computer was out of the question and it was the first game I ever played online as my own. In other words, I had no life as a teenager and was always at home playing games... yup.

The first game I really remember sinking time into was CS 1.3. I didn't really get into the game scene until the very end of my teenage years but that one year of teenage gaming was damned fun. And I was TERRIBLE at Counter-Strike too. I mean god awful bad. But it was still fun.

For me Monkey Island series, an Sid Mayers Pirates.

KaM steam version kinda sucks because its not compatible with http://www.kamremake.com/ which is essential. GoG version is way better and you don't have unnecessary DRM on GoG version being DRM free and all.

Gunz the Duel, international beta version before the hackers killed it

I wouldn't quite say it marked my childhood but it is a game I faintly remembered, a Megaman clone, yet couldn't find which it was. Then I found it through a GAF thread about NES soundtracks, I think. It is Journey to Silius. It was one of the first games I ever played and I remember flinging the controller instinctually to make the playable character jumped further. I got over the habit and then had a laugh when a relative of mine played the game and did the same thing. Never made it past stage 2. Fun fact: apparently the game began as a Terminator game but was reskinned when the publisher lost the rights to the franchise. Also if you think about it, this game has a rather silly title.

Constructor (aka Street Wars), Grim Fandango, Creature Crunch, and Chrono Trigger (for SNES).

That would be Counter Strike 1.5 in my Pentium III IBM computer
I had no internet back then, so I played with bots. I sucked so bad at this game so I geared all bots with knife, with me shooting their heads. To me that was such AAA-class entertainment back then.