MarkoH01: Those Steam keys from humble (Braveland, Meadows) mentioned above are useless if you have not revealed them. Humble just confirmed this to me. Just look:
"We apologize that we ran out of Braveland keys during our Gameification promotion. And we thank you for your feedback. We learned a lot from this year's End of Summer Sale. And we will be taking steps to ensure that situations like this do not happen again."
"So because you made a mistake I can say goodbye to Braveland and Meadows? Both are keys I received visiting your site and as a reward I was promised(!) those keys. I ended up with two keys I will now never be able to use? That's just great."
"Unfortunately, that is the case. We no longer have access to a supply of keys for both of the aforementioned free games. We apologize for the inconvenience that this has caused. If you have any additional questions, please let me know."
Wow, what a bunch of liars. They even have the gall to give you the "As soon as we receive more keys, we will add them to this page and send you an email." message when in fact they are lying through their teeth.
I'll make sure to think twice every time I consider spending money over there. Don't make is seem as if all you have to do to get these games is "claim" them if I also have to immediately redeem the key especially if I can "claim" the reward after the keys have run out. I don't care if they have to buy every single one of the missing keys at full price, this is false advertising, plain and simple.
Good thing I redeemed Glass Masquerade as soon as I claimed it since it's actually a nice relaxing game with beautiful artwork.