What pre Steam game CD keys can be redeemed in Steam

Thanks, that should help.

Or at least I thought so, but it seems to be limited to new games. I'm talking about the old stuff, like my old Half-Life: Game of the Year discs. I was hoping for titles on old stuff.

holy crap, thanks for this, will test my UT3 retail copy right now!

Not a single one of the things you said is pre-steam. Congratulations.

Less games I need to hunt through my disc wallets for, and rely on discs. I have piles of the damn things.

Installing games from discs:

1. Searching for the right CD and hoping it's not too scratched and still readable
2. Inserting it, running install (which is sadly not compatible with 64bit Windows) and entering the CD-key
3. You somewhat manage to install it, but you also need to search for patches and download them (thats fun if the game is too old and the company went bankrupt), enjoying slow speed while downloading
4. Playing.
   Wasted time: around 1 hour or more.

Installing games on Steam:

1. Right click on game, selecting Install Game and nexting till end
2. Waiting for it to be downloaded
3. Playing
   Wasted time: depends on inet speed, HL1 takes less than 10 minutes on 10mbit.

What's plausible is that you're a dumbass.

Some are usable. I had three keys in my old Half-Life: Game of the Year which gave Half-Life and several expansions / mods. I wanted to know if others were usable.

You - I DON'T FUCKING READ ANYTHING.

Seriously, you're dumb. Read the fucking thread, he succesfully redeemed a code for the Original half life, A PRE-STEAM GAME, on steam. Now, When that happens, you sure as hell get wondering what other games you can do it for, so how about you read the full thing first?

You are wrong, there more than enough retail games that you now can activate on Steam, there's a FAQ page for that.

One good example is Half-Life, it was released 1998, so yeah.. you do the math.

I just used a key for Half-Life: Game of the Year that was released before Steam existed and it worked perfectly well...

A little research before commenting can save you a lot of face, you should try it sometime. ~_O