Random key from Fanatical. I already own the game (and played it quite a bit), so I don't really have a use for an additional copy.
The game itself is fun, a rogue-lite title among the lines of Enter The Gungeon or the first Risk of Rain.

Afaik the key doesn't seem to be region-locked. If you win and there are issues with the activation on steam, please let me know.

Good luck & have fun. :D