As the title says, I just bought the Humble Book Bundle with a bunch of Warhammer novels, and it came with the Prospero Expansion to the Horus Heresy game. I don't own the base game and never will


Here is the key. Reply or Message when redeemed.

I accidentally hit REDEEM before I knew what I was doing, so I don't think I can gift the key through Humble, but the key itself should work or be giftable through Steam..

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As long as you've not played the game over 2 hours, I think you can convince a Steam rep to un-bind it and gift it to someone else if you'd explain your mistake.

Thanks. Sorry, I wasn't clear. I haven't added the game to my STEAM Account. On the Humble Bundle Page there is an option to REDEEM which exposes the key and another option for Gifting directly. I was going to wait till there was someone to gift it to, as I thought the option would remain.

The bare key should still be good for anyone to use on Steam.