Giveaway winner saying keys are dupes.

GMG is known for several shady elements- the most public of which is several instances of them selling keys for games that the relevant publishers claimed GMG didn't have distribution rights to (the most notable of which may be witcher 3). This is primarily assumed to be GMG exploiting regional purchasing, by buying regional (but not activation restricted) keys and marking them up for sale in countries with more valuable currencies, but "it fell off the back of a truck" mentality has been hinted at as well.

GMG has themselves officially stated that they don't offer support after a week from purchase, that they won't replace games purchased for the wrong platform (even when the listing of the wrong platform was their own fault), that any indication that you're activating to any account other than your own (eg, anything from purchasing for Steamgifts, as a gift, or to activate on a family member's account) will revoke support for the entire order in which such implication is offered (including for any games actually intended to be activated to your primary account).

In addition to their habit of consumer-unfriendly policies, GMG has been known for their extremely rude customer support.

That said, I haven't heard any real indications that their keys don't reliably work within the initial week period, so if you stick closely to their "activate within a week onto your own account" mentality, and you're careful about the listed platform, you really shouldn't have issues with using the site. In that, it's a matter of knowing the site's quirks- just like how you need to always make sure to immediately back up IndieGala keys (they've a rare, but consistent habit of randomly, completely and permanently shutting down individual user accounts [I lost around $35 of keys from that, myself] ), or be aware of how to assess purchasing risk and deactivate shield on G2A.

Not sure what you mean there, but to clarify, Humble Gift Links operate by transferring both the activation and support rights to the giftee, and are considered "attached" when an e-mail becomes linked to the gift. At that point, the giftee can use the order resender to access the key at any time (as it isn't treated any different from any other of their purchases after being linked to their account), and directly request assistance from Humble Support if there are any issues with the key.

Think of it as being similar to transferring an old Steam gift to someone else's Steam inventory.

In any case, for a duration there were several reports of, for people who generated gift links and left them sitting for months without them getting linked to an e-mail, gift links reporting that they'd been used (when they shouldn't have been) [as in, they'd been sent to and had their ownership linked to an unknown e-mail]. Whether this was a security hole or site bug or other element was, as far as I'm aware, never clarified. If I followed the matter correctly, Humble did replace all problematic links, and there haven't been any reports of issues since, so it's more a general reference than anything that's likely of any present concern [and, for the especially cautious, can be avoided simply by not generating gift links until you're actually ready to use them].

Right, I meant more that if you already own the game you could check to see if the next key works before sending. Nothing you can do about the keys already sent.

Because all 8 were from a 3 month period back in 2015. He probably didn't know the rules and got suspended for all of them at one time, so it's not like he was suspended, told the rules, and then came back and kept breaking the rules. He has activated about 95 wins since then, so it seems he is following the rules now.

Thanks Bibo, but for me pointing mere facts, that can be verified with just few clicks by anyone, is not calling out.
It's just a warning for the thread creator to check and judge the situation by himself.

That's not true that the key is invalidated if you own the game already.
Looks like an anti-steam rant.

Yes it is , I've done it many times by mistake then sent the key to a friend and he said the key is invalid or marked as used , i'm not making this up , I got no time to waste...

lol do it and see

no problem.

i actually got them to cover for the first one he said it was a duplicate. it took me only a few minutes to get a bunch of them.

I was lurking around to BL him but guess i don't need that. Yay!

What a surprise

bump!

This proves what I'm saying , you can only activate a key once , if you already own the game and you try to activate it again with a key then that key will be invalid/dup...these key are all new only tried to activate on my account 1 time (steam message was I already own that game).

OP's profile not yours ^^