Alekhine's Gun - https://store.steampowered.com/app/406720/
key from
Fanatical - Bumper Pick & Mix Bundle | https://www.fanatical.com/en/pick-and-mix/bumper-pick-mix-bundle/
https://www.steamgifts.com/discussion/gQCsN/fanatical-bumper-pick-mix-bundle

Notice: Region lock
Alekhine's Gun is not redeemable in Germany.

View attached image.