Yep, apparently those codes have expired. Check this thread for GOG code expiration dates:

http://www.gog.com/forum/general/gog_bundle_code_expiration_dates/page1

You and everybody else!

The Carmageddon codes expired on 14 October.

Thanks for the resource.

Interesting to note in that thread that the promo codes can be converted to regular gift codes (that won't expire), but only if you don't already own the game. So it stands to reason that there might still be some of those Carmageddon Max Packs around.

Then again, maybe this is a new feature because I don't remember it being available to us in the past.

...

list updated

http://www.gog.com/forum/general/gogs_general_trading_thread/page14/post276

Updated my trade list again.

Recent additions:

- Dementium II HD (Steam)
- Commando Jack (Steam)
- Chaos Domain (Steam)
- Nux (Steam)
- Platypus (Steam)
- Psichodelya (Steam)
- Rover Rescue (Steam)

Thanks fronzelneekburm for a smooth trade

Just a little bump.

Have:
UnEpic
Megabyte Punch
Witcher 2
Many Humble keys

Want:
Shadowrun Returns: Dragonfall

Willing to trade lots of the Humble keys; let me know if there's anything in particular you might want.

I have had successful trades in the past with Impaler26.

Thanks to madth3 for the trade!

Thanks for a generous trade!

Thank you too, looking forward to the next one :)

I need to bump this with a little update/explanation :

I've added about a dozen or so Keys and I've tried to update links to all the Steam ones.
Problem is, I've apparently hit some kind of limit and only some of the links took, the others remain link-less.

I also have Shiny Loot 6, Shiny Loot 8, and Shiny Loot 9 Bundles from Groupees that aren't in this list available.

http://www.gog.com/forum/general/gogs_general_trading_thread/post56


EDIT :

Hmmm, it also looks like ones I've removed aren't being removed.

Maybe there is a limit on how far back a post can be edited?