There are review pages that prey on Indie developers - they will ask for keys to "review the game" and then for more keys "to give to their followers".
However they will either just copy reviews from other (real) review pages or don't put up a review at all. And if you give them additional keys they will sell them to russian bot farm pages farming steam cards or to shady steam key selling sites like G2A (which have proven multiple times that they have no problem selling keys from dubious or even outright obviously illegal sources).
Please investigate reviewers asking you for keys before you give away any review keys, I really like this game and don't want you get scammed after all the effort you've put into it.
Here are some videos explaining the whole thing much better (and in far more detail) than I ever could:
https://www.youtube.com/watch?v=QTNtKH8ne2w
https://www.youtube.com/watch?v=uNOyc0A4vi0
However they will either just copy reviews from other (real) review pages or don't put up a review at all. And if you give them additional keys they will sell them to russian bot farm pages farming steam cards or to shady steam key selling sites like G2A (which have proven multiple times that they have no problem selling keys from dubious or even outright obviously illegal sources).
Please investigate reviewers asking you for keys before you give away any review keys, I really like this game and don't want you get scammed after all the effort you've put into it.
Here are some videos explaining the whole thing much better (and in far more detail) than I ever could:
https://www.youtube.com/watch?v=QTNtKH8ne2w
https://www.youtube.com/watch?v=uNOyc0A4vi0
