Deus Ex GOTY Duplicate key?

[Parisian]

i bought a key for Deus ex GOTY from ♥♥♥ but when i try to activate it it says its a duplicate key and has been used before.

[Francisè von Spitroast]

From where? You're gonna have to talk to where you bought it to see what's happened. I'm pretty sure Deus Ex doesn't have keys though, especially not for Steam. I mean even the disk version didn't have a key.

[talgaby]

He is trying to say G2A. And it serves you right for buying from a Russian-backed site which has been publicly known to sell stolen, already used, and disabled keys. Consider it your lesson of never to buy from them.
Just wait for a Steam sale, or try to get a key from a legit reseller. (Use the list of IsThereAnyDeal if you want to know which sites you can trust for Steam keys.)

Also, the disk version very much had a key. All Deus Ex versions use keys in some form, although sites like GamersGate integrate it into their installation, so you don't have to manually unlock the game after installing it. But around 2000 most AAA titles required a key to activate during or after install.

[Parisian]

Good news ♥♥♥ said there going to help me get a new key or a refund.