Well, I made my research since I don’t have any experience on publishing a game and I don’t like this fact at all, since it’s ruining the game and the developer, who worked hard for 15 months (and it’s still working for fixing bugs and have some support for the players).
From the very start of them, you can already see the suspicious people you noticed. If you look at the profile of some of them, you can see the reviews they made. Mostly are positive and many of them reviews the same games (Ravenage’s free games and some others like StormEdge: Wind of Change which is one of the not-Ravenage games, but with many review from the same people who “reviewed” this game).
If you look at SteamDB, you see a insanely high amount of players (even before the release), but no one talk about this game. No forums, no reviews, anything.
What I can say is this: Thund is not responsible of this, and this whole situation is weird and we can make up what happened (I am not saying anything). If you like original puzzle games, this is one of them. You can get for free both the Prologue and Demo and the whole game will last at least 10 hours and it’s not linear, making this a puzzle metroidvania with a dark story an ambientation and dynamic soundtrack.
Again, it’s a shame this happened. We are frustrated as you for this.