First off, since others have commented about this I will just say that it should be pretty obvious this game is not free - it clearly displays “in app purchases,” and doesn’t charge outright because the developers are allowing you to trial the game by playing the first segment. This is not a free-to-play game model, and so of course they will need to charge money for the full game. Do you really think they can make great games like this absolutely free?
As for the game itself, this is a welcome addition to the “full-motion-video” genre (think similar to Her Story, At Dead Of Night, etc). While it’s a murder mystery, it’s also fun and a bit tongue in cheek at times (somewhat like Clue), and it has a fun and talented cast of eccentric characters where everyone has a motive. In this modern age of video-calls, it also works really well as a family digital “gathering” and feels very immersive.
I won’t say anything else about the story, but it’s a fun one, and the ending felt satisfying (and alternate endings were also entertaining). Expect to play it more than once, but the replay value is also high as you will uncover more secrets.
Overall a great game, and I hope we can expect more games like this in the future!