Going to do a casual review for now and update when more is added to the game. On launch, it's a good early access. There's some optimization to be done, and the walking animation is a bit goofy, but the three maps they have currently are all very fun, expansive, & detailed. The two monsters are different and interesting and mix-up how you play, as do the two game modes (the first game mode is basically similar to a Damned/Slender, you need to collect 10 stop watches while the monster is invisible except for on your phone, the second is an 'infection' mode where the monsters kill humans, who turn into malicious spirits to kill more humans).
You can play in a lobby with between 2-8 people, the lobbies are good, don't need to forward ports and hosting is easy, along with some good customization in the lobby for things like time, rounds, etc.
Game is good for a few rounds or hours, but the concept is executed well. I found it less scary and more exciting and fun with some really tense and clutch moments. Both modes out feel different and change the tone of rounds considerably. This game will be made or broke by support to the title, I can see this being a real gem of a multiplayer horror game if they add more maps/monsters/modes at a pretty steady rate, what's there now is quite fun and the seven friends I played with and myself all enjoyed it.
While I personally don't find it hugely scary, I did find it a lot of fun, tense, and I did have panic moments when a monster was on my tail or if I was hiding and hoping to god they wouldn't spot or sense me.
TL;DR - Game is fun, content there currently is fun, needs more of it but a very good Day 1 Early Access, has some kinks but nothing game-breaking, this is a good pick-up-and-play game that is good for a few hour sessions every once in a while, and with more content could get addicting. Look forward to see what it becomes.