Broken Age, Lumino City, and Odallus The Dark Call (and probably others) have already been claimed by someone. (likely a lurker as there's no note)
Thanks for the thought, but next time please don't post the keys publicly. Just list the games you're offering and request that anyone who wants one message you for the key. That way lurkers and bots designed to find and activate product keys won't be able to find them.
Disregard if you were notified but via DM instead of publicly.
edit: Got one spare copy of each of the following. (and they're gone)
Killing Floor Community Weapon Packs 1-3 DLC
Killing Floor Chickenator DLC
Vanishing of Ethan Carter
Shadow Complex Remastered
DM me if you want something. One title per user. (DLC is exempt from this rule, but you must either own Killing Floor or ask for it)