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What should I do if it ran out of steam keys then? Am I screwed or will I get one somehow? The link doesn't say anything on what to do about it other than contact support which I already did but not getting any replies.

Hi guys! I bought a game called "Dwarf fortress" and it has a bundled steam key when I purchased it. However after purchase I don't know where it is. 

I tried looking on the email, download page and inside the zip file but I can't find it.